GCC Code Coverage Report

Directory: ./
File: sql/item.cc
Date: 2022-11-26 14:12:44
Exec Total Coverage
Lines: 4699 5326 88.2%
Branches: 3614 5659 63.9%
Line Branch Exec Source
1 /*
2 Copyright (c) 2000, 2022, Oracle and/or its affiliates.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License, version 2.0,
6 as published by the Free Software Foundation.
7
8 This program is also distributed with certain software (including
9 but not limited to OpenSSL) that is licensed under separate terms,
10 as designated in a particular file or component or in included license
11 documentation. The authors of MySQL hereby grant you an additional
12 permission to link the program and your derivative works with the
13 separately licensed software that they have included with MySQL.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License, version 2.0, for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
23
24 #include "sql/item.h"
25
26 #include "integer_digits.h"
27 #include "my_compiler.h"
28 #include "my_config.h"
29
30 #include <stdio.h>
31 #ifdef HAVE_SYS_TIME_H
32 #include <sys/time.h>
33 #endif
34 #include <stddef.h>
35 #include <algorithm>
36 #include <optional>
37 #include <utility>
38
39 #include "decimal.h"
40 #include "float.h"
41 #include "limits.h"
42 #include "my_alloc.h"
43 #include "my_dbug.h"
44 #include "my_inttypes.h"
45 #include "my_macros.h"
46 #include "myisampack.h" // mi_int8store
47 #include "mysql.h" // IS_NUM
48 #include "mysql_time.h"
49 #include "sql-common/json_dom.h" // Json_wrapper
50 #include "sql/aggregate_check.h" // Distinct_check
51 #include "sql/auth/auth_acls.h"
52 #include "sql/auth/auth_common.h" // get_column_grant
53 #include "sql/auth/sql_security_ctx.h"
54 #include "sql/current_thd.h"
55 #include "sql/derror.h" // ER_THD
56 #include "sql/error_handler.h" // Internal_error_handler
57 #include "sql/gis/srid.h"
58 #include "sql/item_cmpfunc.h" // COND_EQUAL
59 #include "sql/item_create.h" // create_temporal_literal
60 #include "sql/item_func.h" // item_func_sleep_init
61 #include "sql/item_json_func.h" // json_value
62 #include "sql/item_row.h"
63 #include "sql/item_strfunc.h" // Item_func_conv_charset
64 #include "sql/item_subselect.h"
65 #include "sql/item_sum.h" // Item_sum
66 #include "sql/key.h"
67 #include "sql/log_event.h" // append_query_string
68 #include "sql/mysqld.h" // lower_case_table_names files_charset_info
69 #include "sql/protocol.h"
70 #include "sql/query_options.h"
71 #include "sql/select_lex_visitor.h"
72 #include "sql/sp.h" // sp_map_item_type
73 #include "sql/sp_rcontext.h" // sp_rcontext
74 #include "sql/sql_base.h" // view_ref_found
75 #include "sql/sql_bitmap.h"
76 #include "sql/sql_class.h" // THD
77 #include "sql/sql_derived.h" // Condition_pushdown
78 #include "sql/sql_error.h"
79 #include "sql/sql_lex.h"
80 #include "sql/sql_list.h"
81 #include "sql/sql_show.h" // append_identifier
82 #include "sql/sql_time.h" // Date_time_format
83 #include "sql/sql_view.h" // VIEW_ANY_ACL
84 #include "sql/system_variables.h"
85 #include "sql/thd_raii.h"
86 #include "sql/tztime.h" // my_tz_UTC
87 #include "template_utils.h"
88 #include "typelib.h"
89 #include "unsafe_string_append.h"
90
91 using std::max;
92 using std::min;
93 using std::string;
94
95 const String my_null_string("NULL", 4, default_charset_info);
96
97 /**
98 Alias from select list can be referenced only from ORDER BY (SQL Standard) or
99 from HAVING, GROUP BY and a subquery in the select list (MySQL extension).
100
101 We don't allow it be referenced from the SELECT list, with one exception:
102 it's accepted if nested in a subquery, which is inconsistent but necessary
103 as our users have shown to rely on this workaround.
104 */
105 552 static inline bool select_alias_referencable(enum_parsing_context place) {
106
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 225 return (place == CTX_SELECT_LIST || place == CTX_GROUP_BY ||
107
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 777 place == CTX_HAVING || place == CTX_ORDER_BY);
108 }
109
110 144268 Type_properties::Type_properties(Item &item)
111 144268 : m_type(item.data_type()),
112 144268 m_unsigned_flag(item.unsigned_flag),
113 144268 m_max_length(item.max_length),
114 144268 m_collation(item.collation) {}
115
116 static enum_field_types real_data_type(Item *item);
117
118 /*****************************************************************************
119 ** Item functions
120 *****************************************************************************/
121
122 /**
123 Init all special items.
124 */
125
126 12108 void item_init(void) {
127 12108 item_func_sleep_init();
128 12108 uuid_short_init();
129 12108 }
130
131 79484025 Item::Item()
132 79484274 : next_free(nullptr),
133 79484274 str_value(),
134 79484320 collation(&my_charset_bin, DERIVATION_COERCIBLE),
135 79484510 item_name(),
136 79484375 orig_name(),
137 79484631 max_length(0),
138 79484631 marker(MARKER_NONE),
139 79484631 cmp_context(INVALID_RESULT),
140 79484631 is_parser_item(false),
141 79484631 is_expensive_cache(-1),
142 79484631 m_data_type(MYSQL_TYPE_INVALID),
143 79484631 fixed(false),
144 79484631 decimals(0),
145 79484631 m_nullable(false),
146 79484631 null_value(false),
147 79484631 unsigned_flag(false),
148 79484631 m_is_window_function(false),
149 79484631 derived_used(false),
150 79484025 m_accum_properties(0) {
151 #ifndef NDEBUG
152 79484631 contextualized = true;
153 #endif // NDEBUG
154
155 // Put item into global list so that we can free all items at end
156
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 79484631 current_thd->add_item(this);
157 79484357 }
158
159 2058993 Item::Item(THD *thd, const Item *item)
160 2059000 : next_free(nullptr),
161 2059000 str_value(item->str_value),
162 2059003 collation(item->collation),
163 2059003 item_name(item->item_name),
164 2059003 orig_name(item->orig_name),
165 2059003 max_length(item->max_length),
166 2059003 marker(MARKER_NONE),
167 2059003 cmp_context(item->cmp_context),
168 2059003 is_parser_item(false),
169 2059003 is_expensive_cache(-1),
170 2059003 m_data_type(item->data_type()),
171 2059007 fixed(item->fixed),
172 2059007 decimals(item->decimals),
173 2059007 m_nullable(item->m_nullable),
174 2059007 null_value(item->null_value),
175 2059007 unsigned_flag(item->unsigned_flag),
176 2059007 m_is_window_function(item->m_is_window_function),
177 2059007 derived_used(item->derived_used),
178 2058993 m_accum_properties(item->m_accum_properties) {
179 #ifndef NDEBUG
180
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 2059007 assert(item->contextualized);
181 2059007 contextualized = true;
182 #endif // NDEBUG
183
184 // Add item to global list
185
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 2059007 thd->add_item(this);
186 2059000 }
187
188 353571063 Item::Item(const POS &)
189 353571817 : next_free(nullptr),
190 353571817 str_value(),
191 353572060 collation(&my_charset_bin, DERIVATION_COERCIBLE),
192 353572853 item_name(),
193 353573145 orig_name(),
194 353572862 max_length(0),
195 353572862 marker(MARKER_NONE),
196 353572862 cmp_context(INVALID_RESULT),
197 353572862 is_parser_item(true),
198 353572862 is_expensive_cache(-1),
199 353572862 m_data_type(MYSQL_TYPE_INVALID),
200 353572862 fixed(false),
201 353572862 decimals(0),
202 353572862 m_nullable(false),
203 353572862 null_value(false),
204 353572862 unsigned_flag(false),
205 353572862 m_is_window_function(false),
206 353572862 derived_used(false),
207 353571063 m_accum_properties(0) {}
208
209 9425909 bool Item::may_eval_const_item(const THD *thd) const {
210
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 9425909 return !thd->lex->is_view_context_analysis() || basic_const_item();
211 }
212
213 /**
214 @todo
215 Make this functions class dependent
216 */
217
218 332281737 bool Item::val_bool() {
219
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 332281737 switch (result_type()) {
220 332281679 case INT_RESULT:
221 332281679 return val_int() != 0;
222 31 case DECIMAL_RESULT: {
223 31 my_decimal decimal_value;
224
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 31 my_decimal *val = val_decimal(&decimal_value);
225
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 31 if (val) return !my_decimal_is_zero(val);
226 6 return false;
227 31 }
228 312 case REAL_RESULT:
229 case STRING_RESULT:
230 312 return val_real() != 0.0;
231 ✗ case ROW_RESULT:
232 default:
233 ✗ assert(0);
234 return false; // Wrong (but safe)
235 }
236 }
237
238 /*
239 For the items which don't have its own fast val_str_ascii()
240 implementation we provide a generic slower version,
241 which converts from the Item character set to ASCII.
242 For better performance conversion happens only in
243 case of a "tricky" Item character set (e.g. UCS2).
244 Normally conversion does not happen.
245 */
246 160760 String *Item::val_str_ascii(String *str) {
247
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 160760 assert(str != &str_value);
248
249 uint errors;
250
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 160760 String *res = val_str(&str_value);
251
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 160868 if (!res) return nullptr;
252
253
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 160789 if (!(res->charset()->state & MY_CS_NONASCII))
254 160404 str = res;
255 else {
256
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 407 if ((null_value = str->copy(res->ptr(), res->length(), collation.collation,
257 &my_charset_latin1, &errors)))
258 ✗ return nullptr;
259 }
260 160801 return str;
261 }
262
263 10 String *Item::val_string_from_real(String *str) {
264 10 double nr = val_real();
265
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 10 if (null_value) return nullptr; /* purecov: inspected */
266 3 str->set_real(nr, decimals, &my_charset_bin);
267 3 return str;
268 }
269
270 13 String *Item::val_string_from_int(String *str) {
271 13 longlong nr = val_int();
272
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 13 if (null_value) return nullptr;
273 13 str->set_int(nr, unsigned_flag, &my_charset_bin);
274 13 return str;
275 }
276
277 29188 String *Item::val_string_from_decimal(String *str) {
278
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 29188 my_decimal dec_buf, *dec = val_decimal(&dec_buf);
279
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 29188 if (null_value) return error_str();
280
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 27359 my_decimal_round(E_DEC_FATAL_ERROR, dec, decimals, false, &dec_buf);
281
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 27359 my_decimal2string(E_DEC_FATAL_ERROR, &dec_buf, str);
282 27359 return str;
283 29188 }
284
285 10931 String *Item::val_string_from_datetime(String *str) {
286
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 10931 assert(fixed == 1);
287 MYSQL_TIME ltime;
288
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 13742 if (get_date(&ltime, TIME_FUZZY_DATE) ||
289
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 2811 (null_value = str->alloc(MAX_DATE_STRING_REP_LENGTH)))
290
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 8120 return error_str();
291
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 2811 make_datetime((Date_time_format *)nullptr, &ltime, str, decimals);
292 2811 return str;
293 }
294
295 69 String *Item::val_string_from_date(String *str) {
296
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 69 assert(fixed == 1);
297 MYSQL_TIME ltime;
298
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 134 if (get_date(&ltime, TIME_FUZZY_DATE) ||
299
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 65 (null_value = str->alloc(MAX_DATE_STRING_REP_LENGTH)))
300
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 4 return error_str();
301
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 65 make_date((Date_time_format *)nullptr, &ltime, str);
302 65 return str;
303 }
304
305 159 String *Item::val_string_from_time(String *str) {
306
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 159 assert(fixed == 1);
307 MYSQL_TIME ltime;
308
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 159 if (get_time(&ltime) || (null_value = str->alloc(MAX_DATE_STRING_REP_LENGTH)))
309
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 7 return error_str();
310
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 152 make_time((Date_time_format *)nullptr, &ltime, str, decimals);
311 152 return str;
312 }
313
314 38 my_decimal *Item::val_decimal_from_real(my_decimal *decimal_value) {
315
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 38 DBUG_TRACE;
316
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 38 double nr = val_real();
317
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 38 if (null_value) return nullptr;
318
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 37 double2my_decimal(E_DEC_FATAL_ERROR, nr, decimal_value);
319 37 return decimal_value;
320 38 }
321
322 13346 my_decimal *Item::val_decimal_from_int(my_decimal *decimal_value) {
323 13346 longlong nr = val_int();
324
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 13346 if (null_value) return nullptr;
325 13346 int2my_decimal(E_DEC_FATAL_ERROR, nr, unsigned_flag, decimal_value);
326 13346 return decimal_value;
327 }
328
329 255 my_decimal *Item::val_decimal_from_string(my_decimal *decimal_value) {
330 String *res;
331
332
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 255 if (!(res = val_str(&str_value))) return nullptr;
333
334
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 255 if (str2my_decimal(E_DEC_FATAL_ERROR & ~E_DEC_BAD_NUM, res->ptr(),
335 res->length(), res->charset(), decimal_value)) {
336 /*
337 The EC_BAD_NUM message is awkward that's why we didn't let
338 str2my_decimal() send it above. We unconditionally send:
339 */
340
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 48 ErrConvString err(res);
341 48 push_warning_printf(
342
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 48 current_thd, Sql_condition::SL_WARNING, ER_TRUNCATED_WRONG_VALUE,
343
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 48 ER_THD(current_thd, ER_TRUNCATED_WRONG_VALUE), "DECIMAL", err.ptr());
344 }
345 255 return decimal_value;
346 }
347
348 70 my_decimal *Item::val_decimal_from_date(my_decimal *decimal_value) {
349
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 70 assert(fixed == 1);
350 MYSQL_TIME ltime;
351
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 70 if (get_date(&ltime, TIME_FUZZY_DATE)) {
352 27 return error_decimal(decimal_value);
353 }
354
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 43 return date2my_decimal(&ltime, decimal_value);
355 }
356
357 128 my_decimal *Item::val_decimal_from_time(my_decimal *decimal_value) {
358
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 128 assert(fixed == 1);
359 MYSQL_TIME ltime;
360
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 128 if (get_time(&ltime)) {
361 1 return error_decimal(decimal_value);
362 }
363
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 127 return date2my_decimal(&ltime, decimal_value);
364 }
365
366 99 longlong Item::val_time_temporal() {
367 MYSQL_TIME ltime;
368
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 99 if ((null_value = get_time(&ltime))) return 0;
369
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 90 return TIME_to_longlong_time_packed(ltime);
370 }
371
372 2429 longlong Item::val_date_temporal() {
373 MYSQL_TIME ltime;
374
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 2429 const sql_mode_t mode = current_thd->variables.sql_mode;
375 2429 const my_time_flags_t flags =
376 2429 TIME_FUZZY_DATE | (mode & MODE_INVALID_DATES ? TIME_INVALID_DATES : 0) |
377 2429 (mode & MODE_NO_ZERO_IN_DATE ? TIME_NO_ZERO_IN_DATE : 0) |
378 (mode & MODE_NO_ZERO_DATE ? TIME_NO_ZERO_DATE : 0);
379
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 2429 if (get_date(&ltime, flags)) return error_int();
380
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 2322 return TIME_to_longlong_datetime_packed(ltime);
381 }
382
383 // TS-TODO: split into separate methods?
384 43 longlong Item::val_temporal_with_round(enum_field_types type, uint8 dec) {
385 43 longlong nr = val_temporal_by_field_type();
386 longlong diff =
387 43 my_time_fraction_remainder(my_packed_time_get_frac_part(nr), dec);
388 43 longlong abs_diff = diff > 0 ? diff : -diff;
389
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 43 if (abs_diff * 2 >= (int)log_10_int[DATETIME_MAX_DECIMALS - dec]) {
390 /* Needs rounding */
391
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 2 switch (type) {
392 ✗ case MYSQL_TYPE_TIME: {
393 MYSQL_TIME ltime;
394 ✗ TIME_from_longlong_time_packed(&ltime, nr);
395 ✗ return my_time_adjust_frac(&ltime, dec,
396 ✗ current_thd->is_fsp_truncate_mode())
397 ✗ ? 0
398 ✗ : TIME_to_longlong_time_packed(ltime);
399 }
400 2 case MYSQL_TYPE_TIMESTAMP:
401 case MYSQL_TYPE_DATETIME: {
402 MYSQL_TIME ltime;
403 2 int warnings = 0;
404
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 2 TIME_from_longlong_datetime_packed(&ltime, nr);
405 6 return propagate_datetime_overflow(
406
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 2 current_thd, &warnings,
407
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 2 my_datetime_adjust_frac(&ltime, dec, &warnings,
408
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 2 current_thd->is_fsp_truncate_mode()))
409
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 2 ? 0
410
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 2 : TIME_to_longlong_datetime_packed(ltime);
411 return nr;
412 }
413 ✗ default:
414 ✗ assert(0);
415 break;
416 }
417 }
418 /* Does not need rounding, do simple truncation. */
419 41 nr -= diff;
420 41 return nr;
421 }
422
423 119 double Item::val_real_from_decimal() {
424 /* Note that fix_fields may not be called for Item_avg_field items */
425 double result;
426
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 119 my_decimal value_buff, *dec_val = val_decimal(&value_buff);
427
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 119 if (null_value) return 0.0;
428
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 111 my_decimal2double(E_DEC_FATAL_ERROR, dec_val, &result);
429 111 return result;
430 119 }
431
432 34685 double Item::val_real_from_string() {
433
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 34685 assert(fixed);
434 34685 StringBuffer<STRING_BUFFER_USUAL_SIZE> tmp;
435
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 34685 const String *res = val_str(&tmp);
436
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 34685 if (res == nullptr) return 0.0;
437
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 34499 return double_from_string_with_check(res->charset(), res->ptr(),
438 68998 res->ptr() + res->length());
439 34685 }
440
441 29 longlong Item::val_int_from_decimal() {
442 /* Note that fix_fields may not be called for Item_avg_field items */
443 longlong result;
444
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 29 my_decimal value, *dec_val = val_decimal(&value);
445
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 29 if (null_value) return 0;
446
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 26 my_decimal2int(E_DEC_FATAL_ERROR, dec_val, unsigned_flag, &result);
447 26 return result;
448 29 }
449
450 65 longlong Item::val_int_from_time() {
451
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 65 assert(fixed == 1);
452 MYSQL_TIME ltime;
453 65 ulonglong value = 0;
454
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 65 if (get_time(&ltime)) return 0LL;
455
456
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 62 if (current_thd->is_fsp_truncate_mode())
457
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 27 value = TIME_to_ulonglong_time(ltime);
458 else
459
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 35 value = TIME_to_ulonglong_time_round(ltime);
460
461
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 62 return (ltime.neg ? -1 : 1) * value;
462 }
463
464 35 longlong Item::val_int_from_date() {
465
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 35 assert(fixed == 1);
466 MYSQL_TIME ltime;
467
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 35 return get_date(&ltime, TIME_FUZZY_DATE)
468
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 35 ? 0LL
469
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 35 : (longlong)TIME_to_ulonglong_date(ltime);
470 }
471
472 43 longlong Item::val_int_from_datetime() {
473
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 43 assert(fixed == 1);
474 MYSQL_TIME ltime;
475
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 43 if (get_date(&ltime, TIME_FUZZY_DATE)) return 0LL;
476
477
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 43 if (current_thd->is_fsp_truncate_mode())
478 ✗ return TIME_to_ulonglong_datetime(ltime);
479 else {
480
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 43 return propagate_datetime_overflow(current_thd, [&](int *warnings) {
481 43 return TIME_to_ulonglong_datetime_round(ltime, warnings);
482 43 });
483 }
484 }
485
486 21 longlong Item::val_int_from_string() {
487
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 21 assert(fixed);
488 21 StringBuffer<MY_INT64_NUM_DECIMAL_DIGITS + 1> tmp;
489
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 21 const String *res = val_str(&tmp);
490
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 21 if (res == nullptr) return 0;
491
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 12 return longlong_from_string_with_check(
492 24 res->charset(), res->ptr(), res->ptr() + res->length(), unsigned_flag);
493 21 }
494
495 1428 type_conversion_status Item::save_time_in_field(Field *field) {
496 MYSQL_TIME ltime;
497
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 1428 if (get_time(&ltime)) return set_field_to_null_with_conversions(field, false);
498
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 1334 field->set_notnull();
499
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 1334 return field->store_time(&ltime, decimals);
500 }
501
502 10060 type_conversion_status Item::save_date_in_field(Field *field) {
503 MYSQL_TIME ltime;
504 10060 my_time_flags_t flags = TIME_FUZZY_DATE;
505
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 10060 const sql_mode_t mode = current_thd->variables.sql_mode;
506
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 10060 if (mode & MODE_INVALID_DATES) flags |= TIME_INVALID_DATES;
507
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 10060 if (get_date(&ltime, flags))
508
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 1748 return set_field_to_null_with_conversions(field, false);
509
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 8312 field->set_notnull();
510
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 8312 return field->store_time(&ltime, decimals);
511 }
512
513 /*
514 Store the string value in field directly
515
516 SYNOPSIS
517 Item::save_str_value_in_field()
518 field a pointer to field where to store
519 result the pointer to the string value to be stored
520
521 DESCRIPTION
522 The method is used by Item_*::save_in_field_inner() implementations
523 when we don't need to calculate the value to store
524 See Item_string::save_in_field_inner() implementation for example
525
526 IMPLEMENTATION
527 Check if the Item is null and stores the NULL or the
528 result value in the field accordingly.
529
530 RETURN
531 Nonzero value if error
532 */
533
534 20663740 type_conversion_status Item::save_str_value_in_field(Field *field,
535 String *result) {
536
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 20663740 if (null_value) return set_field_to_null(field);
537
538 20663740 field->set_notnull();
539 20663902 return field->store(result->ptr(), result->length(), collation.collation);
540 }
541
542 /**
543 Aggregates data types from array of items into current item
544
545 @param items array of items to aggregate the type from
546
547 This function aggregates all type information from the array of items.
548 Found type is supposed to be used later as the result data type
549 of a multi-argument function.
550 Aggregation itself is performed partially by the Field::field_type_merge()
551 function.
552 */
553
554 8785653 void Item::aggregate_type(Bounds_checked_array<Item *> items) {
555 8785653 uint itemno = 0;
556 8785653 const uint count = items.size();
557
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 12213280 while (itemno < count && items[itemno]->data_type() == MYSQL_TYPE_NULL)
558 3427627 itemno++;
559
560
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 8785653 if (itemno == count) // All items have NULL type, consolidated type is NULL
561 {
562 58 set_data_type(MYSQL_TYPE_NULL);
563 58 return;
564 }
565
566
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 8785595 assert(items[itemno]->result_type() != ROW_RESULT);
567
568
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 8785595 enum_field_types new_type = real_data_type(items[itemno]);
569 8785595 uint8 new_dec = items[itemno]->decimals;
570 8785595 bool new_unsigned = items[itemno]->unsigned_flag;
571 8785595 bool mixed_signs = false;
572
573
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 16227353 for (itemno = itemno + 1; itemno < count; itemno++) {
574 // Do not aggregate items with NULL type
575
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 7441758 if (items[itemno]->data_type() == MYSQL_TYPE_NULL) continue;
576
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 6923803 assert(items[itemno]->result_type() != ROW_RESULT);
577
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 6923803 new_type = Field::field_type_merge(new_type, real_data_type(items[itemno]));
578 6923803 mixed_signs |= (new_unsigned != items[itemno]->unsigned_flag);
579 6923803 new_dec = max<uint8>(new_dec, items[itemno]->decimals);
580 }
581
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 8785595 if (mixed_signs && is_integer_type(new_type)) {
582 1891968 bool bump_range = false;
583
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 5679752 for (uint i = 0; i < count; i++)
584
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 5680274 bump_range |= (items[i]->unsigned_flag &&
585
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 1892490 (items[i]->data_type() == new_type ||
586 520 items[i]->data_type() == MYSQL_TYPE_BIT));
587
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 1891968 if (bump_range) {
588
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 1891450 switch (new_type) {
589 5 case MYSQL_TYPE_TINY:
590 5 new_type = MYSQL_TYPE_SHORT;
591 5 break;
592 4 case MYSQL_TYPE_SHORT:
593 4 new_type = MYSQL_TYPE_INT24;
594 4 break;
595 4 case MYSQL_TYPE_INT24:
596 4 new_type = MYSQL_TYPE_LONG;
597 4 break;
598 8 case MYSQL_TYPE_LONG:
599 8 new_type = MYSQL_TYPE_LONGLONG;
600 8 break;
601 1891429 case MYSQL_TYPE_LONGLONG:
602 1891429 new_type = MYSQL_TYPE_NEWDECIMAL;
603 1891429 break;
604 ✗ default:
605 ✗ break;
606 }
607 }
608 }
609
610 8785595 set_data_type(real_type_to_type(new_type));
611 8785595 decimals = new_dec;
612
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 8785595 unsigned_flag = new_unsigned && !mixed_signs;
613 8785595 max_length = 0;
614 8785595 return;
615 }
616
617 353956324 bool Item::itemize(Parse_context *pc, Item **res) {
618
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 353956324 if (skip_itemize(res)) return false;
619
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 353548149 if (super::contextualize(pc)) return true;
620
621 // Add item to global list
622 353550203 pc->thd->add_item(this);
623 /*
624 Item constructor can be called during execution other then SQL_COM
625 command => we should check pc->select on zero
626 */
627
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 353549597 if (pc->select) {
628 353549664 enum_parsing_context place = pc->select->parsing_place;
629
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 353549664 if (place == CTX_SELECT_LIST || place == CTX_HAVING)
630 189818345 pc->select->select_n_having_items++;
631 }
632 353549597 return false;
633 }
634
635 8734727 uint Item::decimal_precision() const {
636 8734727 Item_result restype = result_type();
637 8734740 constexpr const uint DATE_INT_DIGITS{8}; /* YYYYMMDD */
638 8734740 constexpr const uint TIME_INT_DIGITS{7}; /* hhhmmss */
639 8734740 constexpr const uint DATETIME_INT_DIGITS{14}; /* YYYYMMDDhhmmss */
640
641
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 8734740 if ((restype == DECIMAL_RESULT) || (restype == INT_RESULT)) {
642 8679200 uint prec = my_decimal_length_to_precision(max_char_length(), decimals,
643
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 8679198 unsigned_flag);
644 8679199 return max<uint>(1, min<uint>(prec, DECIMAL_MAX_PRECISION));
645 }
646
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 55542 switch (data_type()) {
647 112 case MYSQL_TYPE_TIME:
648 112 return decimals + TIME_INT_DIGITS;
649 285 case MYSQL_TYPE_DATETIME:
650 case MYSQL_TYPE_TIMESTAMP:
651 285 return decimals + DATETIME_INT_DIGITS;
652 24 case MYSQL_TYPE_DATE:
653 24 return decimals + DATE_INT_DIGITS;
654 55121 default:
655 55121 break;
656 }
657
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 55121 return min<uint>(max_char_length(), DECIMAL_MAX_PRECISION);
658 }
659
660 35418 uint Item::time_precision() {
661
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 36739 if (!current_thd->lex->is_view_context_analysis() && const_item() &&
662
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 36739 result_type() == STRING_RESULT && !is_temporal()) {
663 MYSQL_TIME ltime;
664 705 String buf, *tmp;
665 705 MYSQL_TIME_STATUS status;
666
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 705 assert(fixed);
667 // Nanosecond rounding is not needed, for performance purposes
668
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 1403 if ((tmp = val_str(&buf)) &&
669
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 698 str_to_time(tmp, &ltime, TIME_FRAC_TRUNCATE, &status) == 0)
670 691 return min(status.fractional_digits, uint{DATETIME_MAX_DECIMALS});
671
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 705 }
672 34727 return min(decimals, uint8{DATETIME_MAX_DECIMALS});
673 }
674
675 304163 uint Item::datetime_precision() {
676
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 601026 if (!current_thd->lex->is_view_context_analysis() && const_item() &&
677
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 601026 result_type() == STRING_RESULT && !is_temporal()) {
678 MYSQL_TIME ltime;
679 179581 String buf, *tmp;
680 179581 MYSQL_TIME_STATUS status;
681
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 179581 assert(fixed);
682 // Nanosecond rounding is not needed, for performance purposes
683
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 180059 if ((tmp = val_str(&buf)) &&
684
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 478 !propagate_datetime_overflow(
685
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 478 current_thd, &status.warnings,
686
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 478 str_to_datetime(tmp, &ltime, TIME_FRAC_TRUNCATE | TIME_FUZZY_DATE,
687 &status)))
688 471 return min(status.fractional_digits, uint{DATETIME_MAX_DECIMALS});
689
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 179581 }
690 303692 return min(decimals, uint8{DATETIME_MAX_DECIMALS});
691 }
692
693 2940729 void Item::print_item_w_name(const THD *thd, String *str,
694 enum_query_type query_type) const {
695 2940729 print(thd, str, query_type);
696
697
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 2940730 if (item_name.is_set() && query_type != QT_NORMALIZED_FORMAT) {
698 2940730 str->append(STRING_WITH_LEN(" AS "));
699 2940729 append_identifier(thd, str, item_name.ptr(), item_name.length());
700 }
701 2940730 }
702
703 /**
704 @details
705 "SELECT (subq) GROUP BY (same_subq)" confuses ONLY_FULL_GROUP_BY (it does
706 not see that both subqueries are the same, raises an error).
707 To avoid hitting this problem, if the original query was:
708 "SELECT expression AS x GROUP BY x", we print "GROUP BY x", not
709 "GROUP BY expression". Same for ORDER BY.
710 This has practical importance for views created as
711 "CREATE VIEW v SELECT (subq) AS x GROUP BY x"
712 (print_order() is used to write the view's definition in the frm file).
713 We make one exception: if the view is merge-able, its ORDER clause will be
714 merged into the parent query's. If an identifier in the merged ORDER clause
715 is allowed to be either an alias or an expression of the view's underlying
716 tables, resolution is difficult: it may be to be found in the underlying
717 tables of the view, or in the SELECT list of the view; unlike other ORDER
718 elements directly originating from the parent query.
719 To avoid this problem, if the view is merge-able, we print the
720 expression. This does not cause problems with only_full_group_by, because a
721 merge-able view never has GROUP BY. @see mysql_register_view().
722 */
723 291866 void Item::print_for_order(const THD *thd, String *str,
724 enum_query_type query_type, bool used_alias) const {
725
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 291866 if ((query_type & QT_NORMALIZED_FORMAT) != 0)
726
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 54 str->append("?");
727
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 291812 else if (used_alias) {
728
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 50359 assert(item_name.is_set());
729 // In the clause, user has referenced expression using an alias; we use it
730 50359 append_identifier(thd, str, item_name.ptr(), item_name.length());
731 } else {
732
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 241453 if (type() == Item::INT_ITEM && basic_const_item()) {
733 /*
734 "ORDER BY N" means "order by the N-th element". To avoid such
735 interpretation we write "ORDER BY ''", which is equivalent.
736 */
737
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 9 str->append("''");
738 } else
739 241444 print(thd, str, query_type);
740 }
741 291866 }
742
743 3336 bool Item::visitor_processor(uchar *arg) {
744 3336 Select_lex_visitor *visitor = pointer_cast<Select_lex_visitor *>(arg);
745 3336 return visitor->visit(this);
746 }
747
748 /**
749 rename item (used for views, cleanup() return original name).
750
751 @param new_name new name of item;
752 */
753
754 9840206 void Item::rename(char *new_name) {
755 /*
756 we can compare pointers to names here, because if name was not changed,
757 pointer will be same
758 */
759
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 9840206 if (!orig_name.is_set() && new_name != item_name.ptr()) orig_name = item_name;
760 9840221 item_name.set(new_name);
761 9840225 }
762
763 237349 Item *Item::transform(Item_transformer transformer, uchar *arg) {
764
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 237349 return (this->*transformer)(arg);
765 }
766
767 70123035 bool Item_ident::itemize(Parse_context *pc, Item **res) {
768
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 70123035 if (skip_itemize(res)) return false;
769
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 70123241 if (super::itemize(pc, res)) return true;
770 70123541 context = pc->thd->lex->current_context();
771 70123427 return false;
772 }
773
774 4 bool Item::check_function_as_value_generator(uchar *checker_args) {
775 Check_function_as_value_generator_parameters *func_arg =
776 4 pointer_cast<Check_function_as_value_generator_parameters *>(
777 checker_args);
778 4 Item_func *func_item = nullptr;
779
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 4 if (type() == Item::FUNC_ITEM &&
780 ✗ ((func_item = down_cast<Item_func *>(this)))) {
781 ✗ func_arg->banned_function_name = func_item->func_name();
782 }
783 4 func_arg->err_code = func_arg->get_unnamed_function_error_code();
784 4 return true;
785 }
786
787 ✗ bool Item_ident::update_depended_from(uchar *arg) {
788 ✗ auto *info = pointer_cast<Item_ident::Depended_change *>(arg);
789 ✗ if (depended_from == info->old_depended_from)
790 ✗ depended_from = info->new_depended_from;
791 ✗ return false;
792 }
793
794 /**
795 Store the pointer to this item field into a list if not already there.
796
797 The method is used by Item::walk to collect all unique Item_field objects
798 from a tree of Items into a set of items represented as a list.
799
800 Item_cond::walk() and Item_func::walk() stop the evaluation of the
801 processor function for its arguments once the processor returns
802 true.Therefore in order to force this method being called for all item
803 arguments in a condition the method must return false.
804
805 @param arg pointer to a mem_root_deque<Item_field *>
806
807 @return
808 false to force the evaluation of collect_item_field_processor
809 for the subsequent items.
810 */
811
812 1687575 bool Item_field::collect_item_field_processor(uchar *arg) {
813
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 1687575 DBUG_TRACE;
814
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 1687575 DBUG_PRINT("info", ("%s", field_name ? field_name : "noname"));
815 1687575 mem_root_deque<Item_field *> *item_list =
816 reinterpret_cast<mem_root_deque<Item_field *> *>(arg);
817
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 2657904 for (Item_field *curr_item : *item_list) {
818
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 1315124 if (curr_item->eq(this, true)) return false; /* Already in the set. */
819 }
820
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 1342780 item_list->push_back(this);
821 1342780 return false;
822 1687575 }
823
824 ✗ bool Item_field::collect_item_field_or_ref_processor(uchar *arg) {
825 ✗ auto *info = pointer_cast<Collect_item_fields_or_refs *>(arg);
826 ✗ if (info->is_stopped(this)) return false;
827
828 ✗ List_iterator<Item> item_list_it(*info->m_items);
829 Item *curr_item;
830 ✗ while ((curr_item = item_list_it++)) {
831 ✗ if (curr_item->eq(this, true)) return false; /* Already in the set. */
832 }
833 ✗ info->m_items->push_back(this);
834 ✗ return false;
835 }
836
837 12 bool Item_field::collect_item_field_or_view_ref_processor(uchar *arg) {
838 12 auto *info = pointer_cast<Collect_item_fields_or_view_refs *>(arg);
839
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 12 if (info->is_stopped(this)) return false;
840
841 ✗ List_iterator<Item> item_list_it(*info->m_item_fields_or_view_refs);
842 Item *curr_item;
843 ✗ while ((curr_item = item_list_it++)) {
844 ✗ if (curr_item->eq(this, true)) return false; /* Already in the set. */
845 }
846 ✗ info->m_item_fields_or_view_refs->push_back(this);
847 ✗ return false;
848 }
849
850 661 bool Item_field::add_field_to_set_processor(uchar *arg) {
851
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 661 DBUG_TRACE;
852
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 661 DBUG_PRINT("info", ("%s", field->field_name ? field->field_name : "noname"));
853 661 TABLE *table = (TABLE *)arg;
854
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 661 if (table_ref->table == table)
855 247 bitmap_set_bit(&table->tmp_set, field->field_index());
856 661 return false;
857 661 }
858
859 6896603 bool Item_field::add_field_to_cond_set_processor(uchar *) {
860
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 6896603 DBUG_TRACE;
861
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 6896615 DBUG_PRINT("info", ("%s", field->field_name ? field->field_name : "noname"));
862 6896606 bitmap_set_bit(&field->table->cond_set, field->field_index());
863 6896618 return false;
864 6896595 }
865
866 15922845 bool Item_field::remove_column_from_bitmap(uchar *argument) {
867 15922845 MY_BITMAP *bitmap = reinterpret_cast<MY_BITMAP *>(argument);
868 15922845 bitmap_clear_bit(bitmap, field->field_index());
869 15922845 return false;
870 }
871
872 /**
873 Check if an Item_field references some field from a list of fields.
874
875 Check whether the Item_field represented by 'this' references any
876 of the fields in the keyparts passed via 'arg'. Used with the
877 method Item::walk() to test whether any keypart in a sequence of
878 keyparts is referenced in an expression.
879
880 @param arg Field being compared, arg must be of type Field
881
882 @retval
883 true if 'this' references the field 'arg'
884 @retval
885 false otherwise
886 */
887
888 16 bool Item_field::find_item_in_field_list_processor(uchar *arg) {
889 16 KEY_PART_INFO *first_non_group_part = *((KEY_PART_INFO **)arg);
890 16 KEY_PART_INFO *last_part = *(((KEY_PART_INFO **)arg) + 1);
891 KEY_PART_INFO *cur_part;
892
893
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 16 for (cur_part = first_non_group_part; cur_part != last_part; cur_part++) {
894
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 16 if (field->eq(cur_part->field)) return true;
895 }
896 ✗ return false;
897 }
898
899 120557 bool Item_field::is_valid_for_pushdown(uchar *arg) {
900 Condition_pushdown::Derived_table_info *dti =
901 120557 pointer_cast<Condition_pushdown::Derived_table_info *>(arg);
902 120557 TABLE_LIST *derived_table = dti->m_derived_table;
903
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 120557 if (table_ref == derived_table) {
904
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 118420 assert(field->table == derived_table->table);
905 // If the expression in the derived table for this column has a subquery
906 // or has non-deterministic result or is a trigger field, condition is
907 // not pushed down.
908 // Expressions having subqueries need a more complicated replacement
909 // strategy than the one that currently exists when the condition is
910 // moved to derived table.
911 // TODO: Lift this limitation.
912 // Any condition with expressions having non-deterministic result in the
913 // underlying derived table should not be pushed.
914 // For ex:
915 // select * from (select rand() as a from t1) where a >0.5;
916 // Here a > 0.5 if pushed down would result in rand() getting evaluated
917 // twice because the query would then be
918 // select * from (select rand() as a from t1 where rand() > 0.5) which
919 // is not correct.
920 // Trigger fields need complicated resolving when we clone a condition
921 // having them.
922 // Expressions which have system variables in the underlying derived
923 // table cannot be pushed as of now because Item_func_get_system_var::print
924 // does not print the original expression which leads to an incorrect clone.
925 Query_expression *derived_query_expression =
926 118420 derived_table->derived_query_expression();
927 118420 for (Query_block *qb = derived_query_expression->first_query_block();
928
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 237290 qb != nullptr; qb = qb->next_query_block()) {
929
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 118881 Item *item = qb->get_derived_expr(field->field_index());
930 118881 bool has_trigger_field = false;
931 118881 bool has_system_var = false;
932
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 118881 WalkItem(item, enum_walk::PREFIX,
933 119719 [&has_trigger_field, &has_system_var](Item *inner_item) {
934
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 119719 if (inner_item->type() == Item::TRIGGER_FIELD_ITEM) {
935 ✗ has_trigger_field = true;
936 ✗ return true;
937 }
938
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 120074 if (inner_item->type() == Item::FUNC_ITEM &&
939
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 355 down_cast<Item_func *>(inner_item)->functype() ==
940 Item_func::GSYSVAR_FUNC) {
941 ✗ has_system_var = true;
942 ✗ return true;
943 }
944 119719 return false;
945 });
946
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 237757 if (item->has_subquery() || item->is_non_deterministic() ||
947
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 237757 has_trigger_field || has_system_var)
948 11 return true;
949 }
950 118409 return false;
951 }
952 2137 return true;
953 }
954
955 /**
956 Check if this column is found in PARTITION clause of all the window functions.
957 Called when checking to see if a condition can be pushed past window functions
958 while pushing conditions down to materialized derived tables.
959
960 @param arg derived table
961
962 @retval
963 false if this field is part of PARTITION clause of all window functions
964 present in the derived table.
965 @retval
966 true otherwise
967 */
968
969 66 bool Item_field::check_column_in_window_functions(uchar *arg) {
970 66 Query_block *query_block = pointer_cast<Query_block *>(arg);
971 // Find the expression corresponding to this column in derived table's
972 // query block and use that to find in window functions of that
973 // query block.
974
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 66 Item *item = query_block->get_derived_expr(field->field_index());
975 66 bool ret = true;
976
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 66 List_iterator<Window> li(query_block->m_windows);
977
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 125 for (Window *w = li++; w != nullptr; w = li++) {
978 78 ret = true;
979
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 109 for (ORDER *o = w->first_partition_by(); o != nullptr; o = o->next) {
980 90 Item *expr = *(o->item);
981
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 90 if (expr == item || item->eq(expr, false)) {
982 59 ret = false;
983 59 break;
984 }
985 }
986
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 78 if (ret) return ret;
987 }
988 47 return ret;
989 }
990
991 /**
992 Check if this column is found in GROUP BY.
993 Called when checking to see if a condition can be pushed past GROUP BY
994 while pushing conditions down to materialized derived tables.
995
996 @param arg derived table
997
998 @retval
999 false if this field is not part of GROUP BY.
1000 @retval
1001 true otherwise.
1002 */
1003 87 bool Item_field::check_column_in_group_by(uchar *arg) {
1004 87 Query_block *query_block = pointer_cast<Query_block *>(arg);
1005 // Find the expression corresponding to this column in the derived
1006 // table's query block and use that to find in GROUP BY of that
1007 // query block.
1008 87 Item *item = query_block->get_derived_expr(field->field_index());
1009
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 123 for (ORDER *group = query_block->group_list.first; group;
1010 36 group = group->next) {
1011
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 99 if (*group->item == item || item->eq(*group->item, false)) return false;
1012 }
1013 24 return true;
1014 }
1015
1016 118093 Item *Item_field::replace_with_derived_expr(uchar *arg) {
1017 Condition_pushdown::Derived_table_info *dti =
1018 118093 pointer_cast<Condition_pushdown::Derived_table_info *>(arg);
1019
1020 // This column's table reference should be same as the derived table from
1021 // where the replacement is retrieved. If not, it is presumed that the
1022 // column has already been replaced with derived table expression (Maybe
1023 // there was an earlier reference to the same column in the condition that
1024 // is being pushed down). There is no need to do anything in such a case.
1025 118093 TABLE_LIST *derived_table = dti->m_derived_table;
1026
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 118093 if (derived_table != table_ref) return this;
1027 118093 Query_block *query_block = dti->m_derived_query_block;
1028 118093 return query_block->clone_expression(
1029 236186 current_thd, query_block->get_derived_expr(field->field_index()),
1030
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 236082 (derived_table->is_system_view ||
1031
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 117989 (derived_table->referencing_view &&
1032
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 118296 derived_table->referencing_view->is_system_view)));
1033 }
1034
1035 59 Item *Item_field::replace_with_derived_expr_ref(uchar *arg) {
1036 Condition_pushdown::Derived_table_info *dti =
1037 59 pointer_cast<Condition_pushdown::Derived_table_info *>(arg);
1038
1039 // This column's table reference should be same as the derived table from
1040 // where the replacement is retrieved. If not, it is presumed that the
1041 // column has already been replaced with derived table expression (Maybe
1042 // there was an earlier reference to the same column in the condition that
1043 // is being pushed down). There is no need to do anything in such a case.
1044 59 TABLE_LIST *derived_table = dti->m_derived_table;
1045
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 59 if (derived_table != table_ref) return this;
1046 59 Query_block *query_block = dti->m_derived_query_block;
1047
1048 // Get the expression in the derived table and find the right ref item to
1049 // point to.
1050 59 Item *select_item = query_block->get_derived_expr(field->field_index());
1051 59 Item *new_ref = nullptr;
1052
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 59 if (select_item) {
1053 59 uint counter = 0;
1054 enum_resolution_type resolution;
1055
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 59 if (find_item_in_list(current_thd, select_item,
1056 query_block->get_fields_list(), &counter,
1057 REPORT_EXCEPT_NOT_FOUND, &resolution)) {
1058 59 Item **replace_item = &query_block->base_ref_items[counter];
1059
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 118 new_ref = new Item_ref(&query_block->context, replace_item, nullptr,
1060 59 nullptr, (*replace_item)->item_name.ptr(),
1061
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 118 resolution == RESOLVED_AGAINST_ALIAS);
1062 }
1063 }
1064
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 59 assert(new_ref);
1065 59 return new_ref;
1066 }
1067
1068 102145 bool Item_field::check_function_as_value_generator(uchar *checker_args) {
1069 Check_function_as_value_generator_parameters *func_args =
1070 102145 pointer_cast<Check_function_as_value_generator_parameters *>(
1071 checker_args);
1072 // We walk through the Item tree twice to check for disallowed functions;
1073 // once before resolving is done and once after resolving is done. Before
1074 // resolving is done, we don't have the field object available, and hence
1075 // the nullptr check.
1076
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 102145 if (field == nullptr) {
1077 9820 return false;
1078 }
1079
1080 92325 int fld_idx = func_args->col_index;
1081
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✓ Branch 1 taken 92325 times.
 92325 assert(fld_idx > -1);
1082
1083 /*
1084 Don't allow the GC (or default expression) to refer itself or another GC
1085 (or default expressions) that is defined after it.
1086 */
1087
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 84991 if ((func_args->source != VGS_CHECK_CONSTRAINT) &&
1088
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 168980 (field->is_gcol() ||
1089
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 261305 field->has_insert_default_general_value_expression()) &&
1090
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 1791 field->field_index() >= fld_idx) {
1091 24 func_args->err_code = (func_args->source == VGS_GENERATED_COLUMN)
1092
1/2
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✓ Branch 1 taken 12 times.
 12 ? ER_GENERATED_COLUMN_NON_PRIOR
1093 : ER_DEFAULT_VAL_GENERATED_NON_PRIOR;
1094 12 return true;
1095 }
1096 /*
1097 If a generated column, default expression or check constraint depends
1098 on an auto_increment column:
1099 - calculation of the generated value is done before write_row(),
1100 - but the auto_increment value is determined in write_row() by the
1101 engine.
1102 So this case is forbidden.
1103 */
1104
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 92313 if (field->is_flag_set(AUTO_INCREMENT_FLAG)) {
1105 7 func_args->err_code =
1106 7 (func_args->source == VGS_GENERATED_COLUMN)
1107
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 13 ? ER_GENERATED_COLUMN_REF_AUTO_INC
1108 6 : (func_args->source == VGS_DEFAULT_EXPRESSION)
1109
2/2
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✓ Branch 1 taken 2 times.
 6 ? ER_DEFAULT_VAL_GENERATED_REF_AUTO_INC
1110 : ER_CHECK_CONSTRAINT_REFERS_AUTO_INCREMENT_COLUMN;
1111 7 return true;
1112 }
1113
1114 92306 return false;
1115 }
1116
1117 /**
1118 Check privileges of base table column
1119 */
1120
1121 53158099 bool Item_field::check_column_privileges(uchar *arg) {
1122 53158099 THD *thd = (THD *)arg;
1123
1124 Internal_error_handler_holder<View_error_handler, TABLE_LIST> view_handler(
1125
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 53158099 thd, context->view_error_handler, context->view_error_handler_arg);
1126
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✓ Branch 2 taken 51 times.
✓ Branch 3 taken 53161088 times.
 53158783 if (check_column_grant_in_table_ref(thd, table_ref, field_name,
1127 strlen(field_name),
1128 thd->want_privilege)) {
1129 51 return true;
1130 }
1131
1132 53161088 return false;
1133 53161139 }
1134
1135 /**
1136 Check privileges of view column.
1137
1138 @note this function will be called for columns from views and derived tables,
1139 however privilege check for derived tables should be skipped
1140 (those columns are checked against the base tables).
1141 */
1142
1143 4345655 bool Item_view_ref::check_column_privileges(uchar *arg) {
1144 4345655 THD *thd = (THD *)arg;
1145
1146
2/2
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✓ Branch 1 taken 4078110 times.
 4345655 if (cached_table->is_derived()) // Rely on checking underlying tables
1147 267545 return false;
1148
1149 Internal_error_handler_holder<View_error_handler, TABLE_LIST> view_handler(
1150
1/2
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✗ Branch 1 not taken.
 4078110 thd, context->view_error_handler, context->view_error_handler_arg);
1151
1152
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 4078115 assert(strlen(cached_table->get_table_name()) > 0);
1153
1154
3/4
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✓ Branch 2 taken 20 times.
✓ Branch 3 taken 4078095 times.
 4078115 if (check_column_grant_in_table_ref(thd, cached_table, field_name,
1155 strlen(field_name), thd->want_privilege))
1156 20 return true;
1157
1158 4078095 return false;
1159 4078115 }
1160
1161 3896133 bool Item::may_evaluate_const(const THD *thd) const {
1162 // Ensure tables are locked whenever preparation is complete
1163
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 3896133 assert(!thd->lex->is_exec_started() || thd->lex->is_query_tables_locked());
1164
2/2
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✓ Branch 1 taken 45098 times.
 7747171 return !(thd->lex->context_analysis_only & CONTEXT_ANALYSIS_ONLY_VIEW) &&
1165
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✓ Branch 1 taken 386949 times.
 3851036 (const_item() ||
1166
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✓ Branch 3 taken 21258 times.
 7360222 (const_for_execution() && thd->lex->is_exec_started()));
1167 }
1168
1169 221119482 bool Item::check_cols(uint c) {
1170
2/2
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✓ Branch 1 taken 221119474 times.
 221119482 if (c != 1) {
1171 8 my_error(ER_OPERAND_COLUMNS, MYF(0), c);
1172 8 return true;
1173 }
1174 221119474 return false;
1175 }
1176
1177 const Name_string null_name_string(nullptr, 0);
1178
1179 77034607 void Name_string::copy(const char *str, size_t length, const CHARSET_INFO *cs) {
1180
2/2
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✓ Branch 1 taken 74738806 times.
 77034607 if (!length) {
1181 /* Empty string, used by AS or internal function like last_insert_id() */
1182
2/2
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✓ Branch 1 taken 21 times.
 2295801 set(str ? "" : nullptr, 0);
1183 2295805 return;
1184 }
1185
2/2
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✓ Branch 1 taken 1451 times.
 74738806 if (cs->ctype) {
1186 /*
1187 This will probably need a better implementation in the future:
1188 a function in CHARSET_INFO structure.
1189 */
1190
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 75832194 while (length && !my_isgraph(cs, *str)) { // Fix problem with yacc
1191 1094839 length--;
1192 1094839 str++;
1193 }
1194 }
1195
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 74738806 if (!my_charset_same(cs, system_charset_info)) {
1196 size_t res_length;
1197
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 41836899 char *tmp = sql_strmake_with_convert(str, length, cs, MAX_ALIAS_NAME,
1198 system_charset_info, &res_length);
1199
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 41836905 set(tmp, tmp ? res_length : 0);
1200 } else {
1201 32901926 size_t len = min<size_t>(length, MAX_ALIAS_NAME);
1202 32901929 char *tmp = sql_strmake(str, len);
1203
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 32901926 set(tmp, tmp ? len : 0);
1204 }
1205 }
1206
1207 11781682 void Item_name_string::copy(const char *str_arg, size_t length_arg,
1208 const CHARSET_INFO *cs_arg,
1209 bool is_autogenerated_arg) {
1210 11781682 m_is_autogenerated = is_autogenerated_arg;
1211 11781682 copy(str_arg, length_arg, cs_arg);
1212
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 11781684 if (length_arg > length() && !is_autogenerated()) {
1213
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 53 ErrConvString tmp(str_arg, static_cast<uint>(length_arg), cs_arg);
1214
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 53 if (length() == 0)
1215 26 push_warning_printf(
1216
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 26 current_thd, Sql_condition::SL_WARNING, ER_NAME_BECOMES_EMPTY,
1217
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 26 ER_THD(current_thd, ER_NAME_BECOMES_EMPTY), tmp.ptr());
1218 else
1219
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 54 push_warning_printf(current_thd, Sql_condition::SL_WARNING,
1220 ER_REMOVED_SPACES,
1221
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 27 ER_THD(current_thd, ER_REMOVED_SPACES), tmp.ptr());
1222 }
1223 11781683 }
1224
1225 /**
1226 @details
1227 This function is called when:
1228 - Comparing items in the WHERE clause (when doing where optimization)
1229 - When trying to find an ORDER BY/GROUP BY item in the SELECT part
1230 - When matching fields in multiple equality objects (Item_equal)
1231 */
1232
1233 129850 bool Item::eq(const Item *item, bool) const {
1234 /*
1235 Note, that this is never true if item is a Item_param:
1236 for all basic constants we have special checks, and Item_param's
1237 type() can be only among basic constant types.
1238 */
1239
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 129850 return type() == item->type() && item_name.eq_safe(item->item_name);
1240 }
1241
1242 64855 Item *Item::safe_charset_converter(THD *thd, const CHARSET_INFO *tocs) {
1243 Item_func_conv_charset *conv =
1244
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 64855 new Item_func_conv_charset(thd, this, tocs, true);
1245
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 64855 return conv && conv->m_safe ? conv : nullptr;
1246 }
1247
1248 /**
1249 @details
1250 Created mostly for mysql_prepare_table(). Important
1251 when a string ENUM/SET column is described with a numeric default value:
1252
1253 CREATE TABLE t1(a SET('a') DEFAULT 1);
1254
1255 We cannot use generic Item::safe_charset_converter(), because
1256 the latter returns a non-fixed Item, so val_str() crashes afterwards.
1257 Override Item_num method, to return a fixed item.
1258 */
1259 107 Item *Item_num::safe_charset_converter(THD *thd, const CHARSET_INFO *tocs) {
1260 /*
1261 Item_num returns pure ASCII result,
1262 so conversion is needed only in case of "tricky" character
1263 sets like UCS2. If tocs is not "tricky", return the item itself.
1264 */
1265
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 107 if (!(tocs->state & MY_CS_NONASCII)) return this;
1266
1267 uint conv_errors;
1268 char buf[64], buf2[64];
1269 92 String tmp(buf, sizeof(buf), &my_charset_bin);
1270 92 String cstr(buf2, sizeof(buf2), &my_charset_bin);
1271
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 92 String *ostr = val_str(&tmp);
1272
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 92 cstr.copy(ostr->ptr(), ostr->length(), ostr->charset(), tocs, &conv_errors);
1273
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 92 if (conv_errors > 0) {
1274 /*
1275 Safe conversion is not possible.
1276 We could not convert a string into the requested character set
1277 without data loss. The target charset does not cover all the
1278 characters from the string. Operation cannot be done correctly.
1279 */
1280 ✗ return nullptr;
1281 }
1282
1283
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 92 char *ptr = thd->strmake(cstr.ptr(), cstr.length());
1284
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 92 if (ptr == nullptr) return nullptr;
1285 auto conv =
1286
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 92 new Item_string(ptr, cstr.length(), cstr.charset(), collation.derivation);
1287
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 92 if (conv == nullptr) return nullptr;
1288
1289 /* Ensure that no one is going to change the result string */
1290 92 conv->mark_result_as_const();
1291
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 92 conv->fix_char_length(max_char_length());
1292 92 return conv;
1293 92 }
1294
1295 ✗ Item *Item_func_pi::safe_charset_converter(THD *thd, const CHARSET_INFO *) {
1296 char buf[64];
1297 ✗ String tmp(buf, sizeof(buf), &my_charset_bin);
1298 ✗ String *s = val_str(&tmp);
1299 ✗ char *ptr = thd->strmake(s->ptr(), s->length());
1300 ✗ if (ptr == nullptr) return nullptr;
1301 auto conv =
1302 ✗ new Item_static_string_func(func_name, ptr, s->length(), s->charset());
1303 ✗ if (conv == nullptr) return nullptr;
1304 ✗ conv->mark_result_as_const();
1305 ✗ return conv;
1306 }
1307
1308 1836426 Item *Item_string::safe_charset_converter(THD *thd, const CHARSET_INFO *tocs) {
1309 1836426 return charset_converter(thd, tocs, true);
1310 }
1311
1312 /**
1313 Convert a string item into the requested character set.
1314
1315 @param thd Thread handle.
1316 @param tocs Character set to to convert the string to.
1317 @param lossless Whether data loss is acceptable.
1318
1319 @return A new item representing the converted string.
1320 */
1321 1836764 Item *Item_string::charset_converter(THD *thd, const CHARSET_INFO *tocs,
1322 bool lossless) {
1323 uint conv_errors;
1324
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 1836764 String tmp, cstr, *ostr = val_str(&tmp);
1325
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 1836764 cstr.copy(ostr->ptr(), ostr->length(), ostr->charset(), tocs, &conv_errors);
1326
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 1836764 if (lossless && conv_errors > 0) {
1327 /*
1328 Safe conversion is not possible.
1329 We could not convert a string into the requested character set
1330 without data loss. The target charset does not cover all the
1331 characters from the string. Operation cannot be done correctly.
1332 */
1333 10 return nullptr;
1334 }
1335
1336
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 1836754 char *ptr = thd->strmake(cstr.ptr(), cstr.length());
1337
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 1836754 if (ptr == nullptr) return nullptr;
1338 auto conv =
1339
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 1836754 new Item_string(ptr, cstr.length(), cstr.charset(), collation.derivation);
1340
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 1836754 if (conv == nullptr) return nullptr;
1341 /* Ensure that no one is going to change the result string */
1342 1836754 conv->mark_result_as_const();
1343 1836754 return conv;
1344 1836764 }
1345
1346 ✗ Item *Item_param::safe_charset_converter(THD *thd, const CHARSET_INFO *tocs) {
1347 ✗ if (may_evaluate_const(thd)) {
1348 ✗ String tmp, cstr, *ostr = val_str(&tmp);
1349
1350 ✗ if (null_value) {
1351 ✗ auto cnvitem = new Item_null();
1352 ✗ if (cnvitem == nullptr) return nullptr;
1353 ✗ cnvitem->collation.set(tocs);
1354 ✗ return cnvitem;
1355 } else {
1356 uint conv_errors;
1357 ✗ cstr.copy(ostr->ptr(), ostr->length(), ostr->charset(), tocs,
1358 &conv_errors);
1359
1360 ✗ if (conv_errors > 0) return nullptr;
1361
1362 ✗ char *ptr = thd->strmake(cstr.ptr(), cstr.length());
1363 ✗ if (ptr == nullptr) return nullptr;
1364 ✗ auto cnvitem = new Item_string(ptr, cstr.length(), cstr.charset(),
1365 ✗ collation.derivation);
1366 ✗ if (cnvitem == nullptr) return nullptr;
1367 ✗ cnvitem->mark_result_as_const();
1368 ✗ return cnvitem;
1369 }
1370 }
1371 ✗ return Item::safe_charset_converter(thd, tocs);
1372 }
1373
1374 3 Item *Item_static_string_func::safe_charset_converter(
1375 THD *thd, const CHARSET_INFO *tocs) {
1376 uint conv_errors;
1377
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1378
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 3 cstr.copy(ostr->ptr(), ostr->length(), ostr->charset(), tocs, &conv_errors);
1379
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 3 if (conv_errors > 0) {
1380 /*
1381 Safe conversion is not possible.
1382 We could not convert a string into the requested character set
1383 without data loss. The target charset does not cover all the
1384 characters from the string. Operation cannot be done correctly.
1385 */
1386 ✗ return nullptr;
1387 }
1388
1389
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 3 char *ptr = thd->strmake(cstr.ptr(), cstr.length());
1390
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 3 if (ptr == nullptr) return nullptr;
1391 3 auto conv = new Item_static_string_func(func_name, ptr, cstr.length(),
1392
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 3 cstr.charset(), collation.derivation);
1393
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 3 if (conv == nullptr) return nullptr;
1394 /* Ensure that no one is going to change the result string */
1395 3 conv->mark_result_as_const();
1396 3 return conv;
1397 3 }
1398
1399 1021453 bool Item_string::eq(const Item *item, bool binary_cmp) const {
1400
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 1021453 if (type() == item->type() && item->basic_const_item()) {
1401 // Should be OK for a basic constant.
1402 503403 Item *arg = const_cast<Item *>(item);
1403 503403 String str;
1404
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 503403 if (binary_cmp) return !stringcmp(&str_value, arg->val_str(&str));
1405
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 88612 return (collation.collation == arg->collation.collation &&
1406
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 88612 !sortcmp(&str_value, arg->val_str(&str), collation.collation));
1407 503406 }
1408 518058 return false;
1409 }
1410
1411 9341 bool Item::get_date_from_string(MYSQL_TIME *ltime, my_time_flags_t flags) {
1412 char buff[MAX_DATE_STRING_REP_LENGTH];
1413 9341 String tmp(buff, sizeof(buff), &my_charset_bin), *res;
1414
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 9341 if (!(res = val_str(&tmp))) {
1415
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 37 set_zero_time(ltime, MYSQL_TIMESTAMP_DATETIME);
1416 37 return true;
1417 }
1418
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 9304 return str_to_datetime_with_warn(res, ltime, flags);
1419 9341 }
1420
1421 8 bool Item::get_date_from_real(MYSQL_TIME *ltime, my_time_flags_t flags) {
1422 8 double value = val_real();
1423
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 8 if (null_value) {
1424 1 set_zero_time(ltime, MYSQL_TIMESTAMP_DATETIME);
1425 1 return true;
1426 }
1427 7 return my_double_to_datetime_with_warn(value, ltime, flags);
1428 }
1429
1430 58 bool Item::get_date_from_decimal(MYSQL_TIME *ltime, my_time_flags_t flags) {
1431
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 58 my_decimal buf, *decimal = val_decimal(&buf);
1432
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 58 if (null_value) {
1433 ✗ set_zero_time(ltime, MYSQL_TIMESTAMP_DATETIME);
1434 ✗ return true;
1435 }
1436
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 58 return my_decimal_to_datetime_with_warn(decimal, ltime, flags);
1437 58 }
1438
1439 1073 bool Item::get_date_from_int(MYSQL_TIME *ltime, my_time_flags_t flags) {
1440 1073 longlong value = val_int();
1441
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 1073 if (null_value) {
1442 2 set_zero_time(ltime, MYSQL_TIMESTAMP_DATETIME);
1443 2 return true;
1444 }
1445 1071 return my_longlong_to_datetime_with_warn(value, ltime, flags);
1446 }
1447
1448 162 bool Item::get_date_from_time(MYSQL_TIME *ltime) {
1449 MYSQL_TIME tm;
1450
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 162 if (get_time(&tm)) {
1451
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 11 assert(null_value || current_thd->is_error());
1452 11 return true;
1453 }
1454
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 151 time_to_datetime(current_thd, &tm, ltime);
1455 151 return false;
1456 }
1457
1458 3 bool Item::get_date_from_numeric(MYSQL_TIME *ltime, my_time_flags_t fuzzydate) {
1459
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 3 switch (result_type()) {
1460 1 case REAL_RESULT:
1461 1 return get_date_from_real(ltime, fuzzydate);
1462 1 case DECIMAL_RESULT:
1463 1 return get_date_from_decimal(ltime, fuzzydate);
1464 1 case INT_RESULT:
1465 1 return get_date_from_int(ltime, fuzzydate);
1466 ✗ case STRING_RESULT:
1467 case ROW_RESULT:
1468 case INVALID_RESULT:
1469 ✗ assert(0);
1470 }
1471 ✗ return (null_value = true); // Impossible result_type
1472 }
1473
1474 /**
1475 Get the value of the function as a MYSQL_TIME structure.
1476 As a extra convenience the time structure is reset on error!
1477 */
1478
1479 269 bool Item::get_date_from_non_temporal(MYSQL_TIME *ltime,
1480 my_time_flags_t fuzzydate) {
1481
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 269 assert(!is_temporal());
1482
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 269 switch (result_type()) {
1483 231 case STRING_RESULT:
1484 231 return get_date_from_string(ltime, fuzzydate);
1485 1 case REAL_RESULT:
1486 1 return get_date_from_real(ltime, fuzzydate);
1487 20 case DECIMAL_RESULT:
1488 20 return get_date_from_decimal(ltime, fuzzydate);
1489 17 case INT_RESULT:
1490 17 return get_date_from_int(ltime, fuzzydate);
1491 ✗ case ROW_RESULT:
1492 case INVALID_RESULT:
1493 ✗ assert(0);
1494 }
1495 ✗ return (null_value = true); // Impossible result_type
1496 }
1497
1498 2378 bool Item::get_time_from_string(MYSQL_TIME *ltime) {
1499 char buff[MAX_DATE_STRING_REP_LENGTH];
1500 2378 String tmp(buff, sizeof(buff), &my_charset_bin), *res;
1501
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 2378 if (!(res = val_str(&tmp))) {
1502
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 10 set_zero_time(ltime, MYSQL_TIMESTAMP_TIME);
1503 10 return true;
1504 }
1505
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 2368 return str_to_time_with_warn(res, ltime);
1506 2378 }
1507
1508 18 bool Item::get_time_from_real(MYSQL_TIME *ltime) {
1509 18 double value = val_real();
1510
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 18 if (null_value) {
1511 ✗ set_zero_time(ltime, MYSQL_TIMESTAMP_TIME);
1512 ✗ return true;
1513 }
1514 18 return my_double_to_time_with_warn(value, ltime);
1515 }
1516
1517 79 bool Item::get_time_from_decimal(MYSQL_TIME *ltime) {
1518
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 79 my_decimal buf, *decimal = val_decimal(&buf);
1519
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 79 if (null_value) {
1520 ✗ set_zero_time(ltime, MYSQL_TIMESTAMP_TIME);
1521 ✗ return true;
1522 }
1523
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 79 return my_decimal_to_time_with_warn(decimal, ltime);
1524 79 }
1525
1526 1179 bool Item::get_time_from_int(MYSQL_TIME *ltime) {
1527 1179 longlong value = val_int();
1528
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 1179 if (null_value) {
1529 ✗ set_zero_time(ltime, MYSQL_TIMESTAMP_TIME);
1530 ✗ return true;
1531 }
1532 1179 return my_longlong_to_time_with_warn(value, ltime);
1533 }
1534
1535 11 bool Item::get_time_from_date(MYSQL_TIME *ltime) {
1536
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 11 assert(fixed == 1);
1537
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 11 if (get_date(ltime, TIME_FUZZY_DATE)) // Need this check if NULL value
1538 4 return true;
1539 7 set_zero_time(ltime, MYSQL_TIMESTAMP_TIME);
1540 7 return false;
1541 }
1542
1543 53 bool Item::get_time_from_datetime(MYSQL_TIME *ltime) {
1544
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 53 assert(fixed == 1);
1545
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 53 if (get_date(ltime, TIME_FUZZY_DATE)) return true;
1546 53 datetime_to_time(ltime);
1547 53 return false;
1548 }
1549
1550 4 bool Item::get_time_from_numeric(MYSQL_TIME *ltime) {
1551
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 4 assert(!is_temporal());
1552
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 4 switch (result_type()) {
1553 1 case REAL_RESULT:
1554 1 return get_time_from_real(ltime);
1555 1 case DECIMAL_RESULT:
1556 1 return get_time_from_decimal(ltime);
1557 2 case INT_RESULT:
1558 2 return get_time_from_int(ltime);
1559 ✗ case STRING_RESULT:
1560 case ROW_RESULT:
1561 case INVALID_RESULT:
1562 ✗ assert(0);
1563 }
1564 ✗ return (null_value = true); // Impossible result type
1565 }
1566
1567 /**
1568 Get time value from int, real, decimal or string.
1569
1570 As a extra convenience the time structure is reset on error!
1571 */
1572
1573 77 bool Item::get_time_from_non_temporal(MYSQL_TIME *ltime) {
1574
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 77 assert(!is_temporal());
1575
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 77 switch (result_type()) {
1576 72 case STRING_RESULT:
1577 72 return get_time_from_string(ltime);
1578 3 case REAL_RESULT:
1579 3 return get_time_from_real(ltime);
1580 ✗ case DECIMAL_RESULT:
1581 ✗ return get_time_from_decimal(ltime);
1582 2 case INT_RESULT:
1583 2 return get_time_from_int(ltime);
1584 ✗ case ROW_RESULT:
1585 case INVALID_RESULT:
1586 ✗ assert(0);
1587 }
1588 ✗ return (null_value = true); // Impossible result type
1589 }
1590
1591 /**
1592 If argument is NULL, sets null_value. Otherwise:
1593 if invalid DATETIME value, or a valid DATETIME value but which is out of
1594 the supported Unix timestamp range, sets 'tm' to 0.
1595 */
1596 426 bool Item::get_timeval(my_timeval *tm, int *warnings) {
1597 MYSQL_TIME ltime;
1598
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 426 if (get_date(&ltime, TIME_FUZZY_DATE)) {
1599
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 13 if (null_value) return true; /* Value is NULL */
1600 4 goto zero; /* Could not extract date from the value */
1601 }
1602
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 413 if (datetime_to_timeval(&ltime, *current_thd->time_zone(), tm, warnings))
1603 24 goto zero; /* Value is out of the supported range */
1604 389 return false; /* Value is a good Unix timestamp */
1605 28 zero:
1606 28 tm->m_tv_sec = tm->m_tv_usec = 0;
1607 28 return false;
1608 }
1609
1610 6584027 const CHARSET_INFO *Item::default_charset() {
1611 6584027 return current_thd->variables.collation_connection;
1612 }
1613
1614 /*
1615 Save value in field, but don't give any warnings
1616
1617 NOTES
1618 This is used to temporary store and retrieve a value in a column,
1619 for example in opt_range to adjust the key value to fit the column.
1620 */
1621
1622 12475807 type_conversion_status Item::save_in_field_no_warnings(Field *field,
1623 bool no_conversions) {
1624
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 12475807 DBUG_TRACE;
1625 12475887 TABLE *table = field->table;
1626
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 12475887 THD *thd = current_thd;
1627 12475888 enum_check_fields tmp = thd->check_for_truncated_fields;
1628 12475888 my_bitmap_map *old_map = dbug_tmp_use_all_columns(table, table->write_set);
1629 12475860 sql_mode_t sql_mode = thd->variables.sql_mode;
1630 /*
1631 For cases like data truncation still warning is reported here. Which was
1632 avoided before with THD::abort_on_warning flag. Since the flag is removed
1633 now, until MODE_NO_ZERO_IN_DATE, MODE_NO_ZERO_DATE and
1634 MODE_ERROR_FOR_DIVISION_BY_ZERO are merged with strict mode, removing even
1635 strict modes from sql_mode here to avoid warnings.
1636 */
1637 12475860 thd->variables.sql_mode &=
1638 ~(MODE_NO_ZERO_IN_DATE | MODE_NO_ZERO_DATE | MODE_STRICT_ALL_TABLES |
1639 MODE_STRICT_TRANS_TABLES);
1640 12475860 thd->check_for_truncated_fields = CHECK_FIELD_IGNORE;
1641
1642
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 12475860 const type_conversion_status res = save_in_field(field, no_conversions);
1643
1644 12475908 thd->check_for_truncated_fields = tmp;
1645 12475908 dbug_tmp_restore_column_map(table->write_set, old_map);
1646 12475895 thd->variables.sql_mode = sql_mode;
1647 12475908 return res;
1648 12475895 }
1649
1650 3372 bool Item::is_blob_field() const {
1651
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 3372 assert(fixed);
1652
1653 3372 enum_field_types type = data_type();
1654
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 6730 return (type == MYSQL_TYPE_BLOB || type == MYSQL_TYPE_GEOMETRY ||
1655 // Char length, not the byte one, should be taken into account
1656
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✓ Branch 1 taken 3264 times.
 3358 max_length / collation.collation->mbmaxlen >
1657 3372 CONVERT_IF_BIGGER_TO_BLOB);
1658 }
1659
1660 /*****************************************************************************
1661 Item_sp_variable methods
1662 *****************************************************************************/
1663
1664 823163 Item_sp_variable::Item_sp_variable(const Name_string sp_var_name)
1665 823163 : m_name(sp_var_name) {}
1666
1667 98526 bool Item_sp_variable::fix_fields(THD *, Item **) {
1668 98526 Item *it = this_item();
1669
1670
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✓ Branch 1 taken 98527 times.
 98527 assert(it->fixed);
1671
1672 98527 max_length = it->max_length;
1673 98527 decimals = it->decimals;
1674 98527 unsigned_flag = it->unsigned_flag;
1675 98527 collation.set(it->collation);
1676 98527 set_data_type(it->data_type());
1677
1678 98526 fixed = true;
1679
1680 98526 return false;
1681 }
1682
1683 372601 double Item_sp_variable::val_real() {
1684
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✓ Branch 1 taken 372601 times.
 372601 assert(fixed);
1685 372601 Item *it = this_item();
1686 372604 double ret = it->val_real();
1687 372604 null_value = it->null_value;
1688 372604 return ret;
1689 }
1690
1691 10725332 longlong Item_sp_variable::val_int() {
1692
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✓ Branch 1 taken 10725332 times.
 10725332 assert(fixed);
1693 10725332 Item *it = this_item();
1694 10725997 longlong ret = it->val_int();
1695 10725951 null_value = it->null_value;
1696 10725951 return ret;
1697 }
1698
1699 1905272 String *Item_sp_variable::val_str(String *sp) {
1700
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✓ Branch 1 taken 1905272 times.
 1905272 assert(fixed);
1701 1905272 Item *it = this_item();
1702 1905477 String *res = it->val_str(sp);
1703
1704 1905443 null_value = it->null_value;
1705
1706
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✓ Branch 1 taken 1905229 times.
 1905443 if (!res) return nullptr;
1707
1708 /*
1709 This way we mark returned value of val_str as const,
1710 so that various functions (e.g. CONCAT) won't try to
1711 modify the value of the Item. Analogous mechanism is
1712 implemented for Item_param.
1713 Without this trick Item_splocal could be changed as a
1714 side-effect of expression computation. Here is an example
1715 of what happens without it: suppose x is varchar local
1716 variable in a SP with initial value 'ab' Then
1717 select concat(x,'c');
1718 would change x's value to 'abc', as Item_func_concat::val_str()
1719 would use x's internal buffer to compute the result.
1720 This is intended behaviour of Item_func_concat. Comments to
1721 Item_param class contain some more details on the topic.
1722 */
1723
1724
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 1905229 if (res != &str_value)
1725 1905229 str_value.set(res->ptr(), res->length(), res->charset());
1726 else
1727 ✗ res->mark_as_const();
1728
1729 1905251 return &str_value;
1730 }
1731
1732 423788 my_decimal *Item_sp_variable::val_decimal(my_decimal *decimal_value) {
1733
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✓ Branch 1 taken 423788 times.
 423788 assert(fixed);
1734 423788 Item *it = this_item();
1735 423788 my_decimal *val = it->val_decimal(decimal_value);
1736 423788 null_value = it->null_value;
1737 423788 return val;
1738 }
1739
1740 ✗ bool Item_sp_variable::val_json(Json_wrapper *wr) {
1741 ✗ assert(fixed);
1742 ✗ Item *it = this_item();
1743 ✗ bool result = it->val_json(wr);
1744 ✗ null_value = it->null_value;
1745 ✗ return result;
1746 }
1747
1748 27 bool Item_sp_variable::get_date(MYSQL_TIME *ltime, my_time_flags_t fuzzydate) {
1749
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✓ Branch 1 taken 27 times.
 27 assert(fixed);
1750 27 Item *it = this_item();
1751 27 return (null_value = it->get_date(ltime, fuzzydate));
1752 }
1753
1754 5 bool Item_sp_variable::get_time(MYSQL_TIME *ltime) {
1755
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 5 assert(fixed);
1756 5 Item *it = this_item();
1757 5 return (null_value = it->get_time(ltime));
1758 }
1759
1760 706065 bool Item_sp_variable::is_null() { return this_item()->is_null(); }
1761
1762 /*****************************************************************************
1763 Item_splocal methods
1764 *****************************************************************************/
1765
1766 801119 Item_splocal::Item_splocal(const Name_string sp_var_name, uint sp_var_idx,
1767 enum_field_types sp_var_type, uint pos_in_q,
1768 801119 uint len_in_q)
1769 : Item_sp_variable(sp_var_name),
1770 801122 m_var_idx(sp_var_idx),
1771 801122 limit_clause_param(false),
1772 801122 pos_in_query(pos_in_q),
1773 801119 len_in_query(len_in_q) {
1774 801122 set_nullable(true);
1775
1776 801122 sp_var_type = real_type_to_type(sp_var_type);
1777
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 801121 m_type = sp_map_item_type(sp_var_type);
1778 801121 set_data_type(sp_var_type);
1779
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 801123 m_result_type = sp_map_result_type(sp_var_type);
1780 801121 }
1781
1782 20505928 Item *Item_splocal::this_item() {
1783
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 20505928 assert(m_sp == current_thd->sp_runtime_ctx->sp);
1784
1785 20506695 return current_thd->sp_runtime_ctx->get_item(m_var_idx);
1786 }
1787
1788 ✗ const Item *Item_splocal::this_item() const {
1789 ✗ assert(m_sp == current_thd->sp_runtime_ctx->sp);
1790
1791 ✗ return current_thd->sp_runtime_ctx->get_item(m_var_idx);
1792 }
1793
1794 139980 Item **Item_splocal::this_item_addr(THD *thd, Item **) {
1795
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 139980 assert(m_sp == thd->sp_runtime_ctx->sp);
1796
1797 139980 return thd->sp_runtime_ctx->get_item_addr(m_var_idx);
1798 }
1799
1800 106 bool Item_splocal::val_json(Json_wrapper *result) {
1801 106 Item *it = this_item();
1802 106 bool ret = it->val_json(result);
1803 106 null_value = it->null_value;
1804 106 return ret;
1805 }
1806
1807 7345 void Item_splocal::print(const THD *thd, String *str, enum_query_type) const {
1808 // While reparsing a derived table condition, print the SP variable name.
1809 // Otherwise, print the SP variable name, followed by '@' and the variable
1810 // index.
1811 7345 str->reserve(m_name.length() + 8);
1812 7345 str->append(m_name);
1813
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 7345 if (!thd->lex->reparse_derived_table_condition) {
1814 7335 str->append('@');
1815 7335 qs_append(m_var_idx, str);
1816 }
1817 7345 }
1818
1819 755 bool Item_splocal::set_value(THD *thd, sp_rcontext *ctx, Item **it) {
1820 755 return ctx->set_variable(thd, get_var_idx(), it);
1821 }
1822
1823 /*****************************************************************************
1824 Item_case_expr methods
1825 *****************************************************************************/
1826
1827 22043 Item_case_expr::Item_case_expr(uint case_expr_id)
1828 : Item_sp_variable(Name_string(STRING_WITH_LEN("case_expr"))),
1829
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 22043 m_case_expr_id(case_expr_id) {}
1830
1831 156917 Item *Item_case_expr::this_item() {
1832
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 156917 assert(m_sp == current_thd->sp_runtime_ctx->sp);
1833
1834 156917 return current_thd->sp_runtime_ctx->get_case_expr(m_case_expr_id);
1835 }
1836
1837 87954 const Item *Item_case_expr::this_item() const {
1838
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 87954 assert(m_sp == current_thd->sp_runtime_ctx->sp);
1839
1840 87954 return current_thd->sp_runtime_ctx->get_case_expr(m_case_expr_id);
1841 }
1842
1843 ✗ Item **Item_case_expr::this_item_addr(THD *thd, Item **) {
1844 ✗ assert(m_sp == thd->sp_runtime_ctx->sp);
1845
1846 ✗ return thd->sp_runtime_ctx->get_case_expr_addr(m_case_expr_id);
1847 }
1848
1849 27 void Item_case_expr::print(const THD *, String *str, enum_query_type) const {
1850
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 27 if (str->reserve(MAX_INT_WIDTH + sizeof("case_expr@")))
1851 ✗ return; /* purecov: inspected */
1852 27 (void)str->append(STRING_WITH_LEN("case_expr@"));
1853 27 qs_append(m_case_expr_id, str);
1854 }
1855
1856 /*****************************************************************************
1857 Item_name_const methods
1858 *****************************************************************************/
1859
1860 8 double Item_name_const::val_real() {
1861
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 8 assert(fixed);
1862 8 double ret = value_item->val_real();
1863 8 null_value = value_item->null_value;
1864 8 return ret;
1865 }
1866
1867 736 longlong Item_name_const::val_int() {
1868
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 736 assert(fixed);
1869 736 longlong ret = value_item->val_int();
1870 736 null_value = value_item->null_value;
1871 736 return ret;
1872 }
1873
1874 15 String *Item_name_const::val_str(String *sp) {
1875
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 15 assert(fixed);
1876 15 String *ret = value_item->val_str(sp);
1877 15 null_value = value_item->null_value;
1878 15 return ret;
1879 }
1880
1881 2 my_decimal *Item_name_const::val_decimal(my_decimal *decimal_value) {
1882
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 2 assert(fixed);
1883 2 my_decimal *val = value_item->val_decimal(decimal_value);
1884 2 null_value = value_item->null_value;
1885 2 return val;
1886 }
1887
1888 1 bool Item_name_const::get_date(MYSQL_TIME *ltime, my_time_flags_t fuzzydate) {
1889
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 1 assert(fixed);
1890 1 return (null_value = value_item->get_date(ltime, fuzzydate));
1891 }
1892
1893 1 bool Item_name_const::get_time(MYSQL_TIME *ltime) {
1894
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 1 assert(fixed);
1895 1 return (null_value = value_item->get_time(ltime));
1896 }
1897
1898 41 bool Item_name_const::is_null() { return value_item->is_null(); }
1899
1900 8686 Item_name_const::Item_name_const(const POS &pos, Item *name_arg, Item *val)
1901 8686 : super(pos), value_item(val), name_item(name_arg) {
1902 8686 set_nullable(true);
1903 8686 }
1904
1905 8686 bool Item_name_const::itemize(Parse_context *pc, Item **res) {
1906
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 8686 if (skip_itemize(res)) return false;
1907
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 17372 if (super::itemize(pc, res) || value_item->itemize(pc, &value_item) ||
1908
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 8686 name_item->itemize(pc, &name_item))
1909 ✗ return true;
1910 /*
1911 The name and value argument to NAME_CONST can only be a literal constant.
1912 This (internal, although documented) feature is only supported for the
1913 stored procedure binlog's needs, cf. subst_spvars().
1914
1915 Apart from plain literals, some extra logic are needed to support a
1916 collation specifier and to handle negative constant values.
1917 */
1918 8686 valid_args = false;
1919
1920
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 8686 if (name_item->basic_const_item()) {
1921
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 8683 Item_func *func = dynamic_cast<Item_func *>(value_item);
1922 8683 Item *possible_const = value_item;
1923
1924
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 8694 if (func && (func->functype() == Item_func::COLLATE_FUNC ||
1925
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 11 func->functype() == Item_func::NEG_FUNC)) {
1926 /*
1927 The value is not a literal constant. Accept it if it's a
1928 COLLATE_FUNC or a NEG_FUNC wrapping a literal constant.
1929 */
1930 2122 possible_const = func->key_item();
1931 }
1932
1933 /*
1934 There should now be no constant items which are functions left,
1935 (e.g. like TIME '1'), since none such are generated by subst_spvars() and
1936 sp_get_item_value(), which is where NAME_CONST calls are generated
1937 internally for the binary log: hence the second predicate below. If user
1938 applications try to use such constructs, or any non-constant contents for
1939 NAME_CONST's value argument (#2), we generate an error.
1940 */
1941
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 17359 valid_args = (possible_const->basic_const_item() &&
1942
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 8676 possible_const->type() != FUNC_ITEM);
1943 }
1944
1945
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 8686 if (!valid_args) {
1946 10 my_error(ER_WRONG_ARGUMENTS, MYF(0), "NAME_CONST");
1947 10 return true;
1948 }
1949
1950 8676 return false;
1951 }
1952
1953 8355 Item::Type Item_name_const::type() const {
1954 /*
1955 As
1956 1. one can try to create the Item_name_const passing non-constant
1957 arguments, although it's incorrect and
1958 2. the type() method can be called before the fix_fields() to get
1959 type information for a further type cast, e.g.
1960 if (item->type() == FIELD_ITEM)
1961 ((Item_field *) item)->...
1962 we return NULL_ITEM in the case to avoid wrong casting.
1963
1964 valid_args guarantees value_item->basic_const_item(); if type is
1965 FUNC_ITEM, then we have a fudged item_func_neg() on our hands
1966 and return the underlying type.
1967 For Item_func_set_collation()
1968 e.g. NAME_CONST('name', 'value' COLLATE collation) we return its
1969 'value' argument type.
1970 */
1971
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 8355 if (!valid_args) return NULL_ITEM;
1972 8355 Item::Type value_type = value_item->type();
1973
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 8355 if (value_type == FUNC_ITEM) {
1974 /*
1975 The second argument of NAME_CONST('name', 'value') must be
1976 a simple constant item or a NEG_FUNC/COLLATE_FUNC.
1977 */
1978 2224 Item_func *func = down_cast<Item_func *>(value_item);
1979
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 2224 assert(func->functype() == Item_func::NEG_FUNC ||
1980 func->functype() == Item_func::COLLATE_FUNC);
1981 2224 return func->key_item()->type();
1982 }
1983 6131 return value_type;
1984 }
1985
1986 8653 bool Item_name_const::fix_fields(THD *thd, Item **) {
1987 char buf[128];
1988 String *tmp;
1989 8653 String s(buf, sizeof(buf), &my_charset_bin);
1990 8653 s.length(0);
1991
1992
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 8653 if (value_item->fix_fields(thd, &value_item) ||
1993
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 8653 name_item->fix_fields(thd, &name_item) || !value_item->const_item() ||
1994
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 25959 !name_item->const_item() ||
1995
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 8653 !(tmp = name_item->val_str(&s))) // Can't have a NULL name
1996 {
1997 ✗ my_error(ER_RESERVED_SYNTAX, MYF(0), "NAME_CONST");
1998 ✗ return true;
1999 }
2000
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 8653 if (item_name.is_autogenerated()) {
2001
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 8650 item_name.copy(tmp->ptr(), (uint)tmp->length(), system_charset_info);
2002 }
2003 8653 collation.set(value_item->collation.collation,
2004 8653 value_item->collation.derivation,
2005 8653 value_item->collation.repertoire);
2006 8653 set_data_type(value_item->data_type());
2007 8653 max_length = value_item->max_length;
2008 8653 decimals = value_item->decimals;
2009 8653 fixed = true;
2010 8653 return false;
2011 8653 }
2012
2013 ✗ void Item_name_const::print(const THD *thd, String *str,
2014 enum_query_type query_type) const {
2015 ✗ str->append(STRING_WITH_LEN("NAME_CONST("));
2016 ✗ name_item->print(thd, str, query_type);
2017 ✗ str->append(',');
2018 ✗ value_item->print(thd, str, query_type);
2019 ✗ str->append(')');
2020 }
2021
2022 /*
2023 need a special class to adjust printing : references to aggregate functions
2024 must not be printed as refs because the aggregate functions that are added to
2025 the front of select list are not printed as well.
2026 */
2027 class Item_aggregate_ref : public Item_ref {
2028 public:
2029 318599 Item_aggregate_ref(Name_resolution_context *context_arg, Item **item,
2030 const char *db_name_arg, const char *table_name_arg,
2031 const char *field_name_arg, Query_block *depended_from_arg)
2032 318599 : Item_ref(context_arg, item, db_name_arg, table_name_arg,
2033 318599 field_name_arg) {
2034 318599 depended_from = depended_from_arg;
2035 318599 }
2036
2037 180423 void print(const THD *thd, String *str,
2038 enum_query_type query_type) const override {
2039
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 180423 if (ref)
2040 180423 (*ref)->print(thd, str, query_type);
2041 else
2042 ✗ Item_ident::print(thd, str, query_type);
2043 180423 }
2044 231888 Ref_Type ref_type() const override { return AGGREGATE_REF; }
2045
2046 /**
2047 Walker processor used by Query_block::transform_grouped_to_derived to
2048 replace an aggregate's reference to one in the new derived table's (hidden)
2049 select list.
2050
2051 @param arg An info object of type Item::Aggregate_ref_update
2052 @returns false
2053 */
2054 ✗ bool update_aggr_refs(uchar *arg) override {
2055 ✗ auto *info = pointer_cast<Item::Aggregate_ref_update *>(arg);
2056 ✗ if (*ref != info->m_target) return false;
2057 ✗ ref = info->m_owner->add_hidden_item(info->m_target);
2058 ✗ return false;
2059 }
2060 };
2061
2062 /**
2063 1. Move SUM items out from item tree and replace with reference.
2064
2065 The general goal of this is to get a list of group aggregates, and window
2066 functions, and their arguments, so that the code which manages internal tmp
2067 tables (creation, row copying) has a list of all aggregates (which require
2068 special management) and a list of their arguments (which must be carried
2069 from tmp table to tmp table until the aggregate can be computed).
2070
2071 2. Move scalar subqueries out of the item tree and replace with reference
2072 when used in arguments to window functions for similar reasons (tmp tables).
2073
2074 @param thd Current session
2075 @param ref_item_array Pointer to array of reference fields
2076 @param fields All fields in select
2077 @param ref Pointer to item. If nullptr, get it from
2078 Item_sum::referenced_by[].
2079 @param skip_registered <=> function be must skipped for registered SUM items
2080
2081 All found SUM items are added FIRST in the fields list and
2082 we replace the item with a reference.
2083
2084 thd->fatal_error() may be called if we are out of memory
2085
2086 The logic of skip_registered is:
2087
2088 - split_sum_func() is called when an aggregate is part of a bigger
2089 expression, example: '1+max()'.
2090
2091 - an Item_sum has referenced_by[0]!=nullptr when it is a group aggregate
2092 located in a subquery but aggregating in a more outer query.
2093
2094 - this referenced_by is necessary because for such aggregates, there are
2095 two phases:
2096
2097 - fix_fields() is called by the subquery, which puts the item into the
2098 outer Query_block::inner_sum_func_list.
2099
2100 - the outer query scans that list, calls split_sum_func2(), it
2101 replaces the aggregate with an Item_ref, so it needs to correct the
2102 pointer-to-aggregate held by the '+' item; so it needs access to the
2103 pointer; this is possible because fix_fields() has stored the
2104 address of this pointer into referenced_by[0].
2105
2106 - So when we call split_sum_func for any aggregate, if we are in the
2107 subquery, we do not want to modify the outer-aggregated aggregates, and
2108 as those are detectable because they have referenced_by[0]!=0: we pass
2109 'skip_registered=true'.
2110
2111 - On the other hand, if we are in the outer query and scan
2112 inner_sum_func_list, it's time to modify the aggregate which was
2113 skipped by the subquery, so we pass 'skip_registered=false'.
2114
2115 - Finally, if the subquery was transformed with IN-to-EXISTS, a new
2116 HAVING condition may have been added, which contains an Item_ref to the
2117 same Item_sum; that makes a second pointer, referenced_by[1],
2118 to remember.
2119 @todo rename skip_registered to some name which better evokes
2120 "outer-ness" of the item; subquery_none exercises this function
2121 (Bug#11762); and rename referenced_by too, as it's set only for
2122 outer-aggregated items.
2123
2124 Examples of 1):
2125
2126 (1) SELECT a+FIRST_VALUE(b*SUM(c/d)) OVER (...)
2127
2128 Assume we have done fix_fields() on this SELECT list, which list is so far
2129 only '+'. This '+' contains a WF (and a group aggregate function), so the
2130 resolver (generally, Query_block::prepare()) calls Item::split_sum_func2 on
2131 the '+'; as this '+' is neither a WF nor a group aggregate, but contains
2132 some, it calls Item_func::split_sum_func which calls Item::split_sum_func2 on
2133 every argument of the '+':
2134
2135 - for 'a', it adds it to 'fields' as a hidden item
2136
2137 - then the FIRST_VALUE wf is added as a hidden item; this is necessary so
2138 that create_tmp_table() and copy_funcs can spot the WF.
2139
2140 - next, for FIRST_VALUE: it is a WF, so its Item_sum::split_sum_func is
2141 called, as its arguments need to be added as hidden items so they can get
2142 carried forward between the tmp tables. This split_sum_func calls
2143 Item::split_sum_func2 on its argument (the '*'); this
2144 '*' is not a group aggregate but contains one, so its
2145 Item_func::split_sum_func is called, which calls Item::split_sum_func2 on
2146 every argument of the '*':
2147 - for 'b', adds it to 'fields' as a hidden item
2148 - for SUM: it is a group aggregate (and doesn't contain any WF) so it
2149 adds it to 'fields' as a hidden item.
2150
2151 So we finally have, in 'fields':
2152
2153 SUM, b, FIRST_VALUE, a, +
2154
2155 Each time we add a hidden item we re-point its parent to the hidden item
2156 using an Item_aggregate_ref. For example, the args[0] of '+' is made to point
2157 to an Item_aggregate_ref which points to the hidden 'a'.
2158
2159 Examples of 2):
2160
2161 SELECT LAST_VALUE((SELECT upper.j FROM t1 LIMIT 1)) OVER (ORDER BY i)
2162 FROM t1 AS upper;
2163 */
2164
2165 757710 void Item::split_sum_func2(THD *thd, Ref_item_array ref_item_array,
2166 mem_root_deque<Item *> *fields, Item **ref,
2167 bool skip_registered) {
2168
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 757710 DBUG_TRACE;
2169 /* An item of type Item_sum is registered <=> referenced_by[0] != 0 */
2170
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 1072850 if (type() == SUM_FUNC_ITEM && skip_registered &&
2171
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 315140 (down_cast<Item_sum *>(this))->referenced_by[0])
2172 ✗ return;
2173
2174 // 'sum_func' means a group aggregate function
2175
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 757710 const bool is_sum_func = type() == SUM_FUNC_ITEM && !m_is_window_function;
2176
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 442675 if ((!is_sum_func && has_aggregation() && !m_is_window_function) ||
2177
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 597810 (!m_is_window_function && has_wf()) ||
2178
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 597775 (type() == FUNC_ITEM && ((down_cast<Item_func *>(this))->functype() ==
2179 40000 Item_func::ISNOTNULLTEST_FUNC ||
2180
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 40000 (down_cast<Item_func *>(this))->functype() ==
2181
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 1515420 Item_func::TRIG_COND_FUNC)) ||
2182
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 597754 type() == ROW_ITEM) {
2183 // Do not add item to hidden list; possibly split it
2184
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 159970 split_sum_func(thd, ref_item_array, fields);
2185
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 880255 } else if ((type() == SUM_FUNC_ITEM || !const_for_execution()) && // (1)
2186
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 318730 (type() != SUBSELECT_ITEM || // (2)
2187
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 1 (down_cast<Item_subselect *>(this)->substype() ==
2188 1 Item_subselect::SINGLEROW_SUBS &&
2189 1 down_cast<Item_subselect *>(this)
2190 1 ->unit->first_query_block()
2191
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 1195481 ->single_visible_field() != nullptr)) &&
2192
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 318730 (type() != REF_ITEM || // (3)
2193
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 133 (down_cast<Item_ref *>(this))->ref_type() ==
2194 Item_ref::VIEW_REF)) {
2195 /*
2196 (1) Replace item with a reference so that we can easily calculate
2197 it (in case of sum functions) or copy it (in case of fields)
2198
2199 The test above is to ensure we don't do a reference for things
2200 that are constants (INNER_TABLE_BIT is in effect a constant)
2201 or already referenced (for example an item in HAVING)
2202
2203 (2) In order to handle queries like:
2204 SELECT FIRST_VALUE((SELECT .. FROM .. LIMIT 1)) OVER (..) FROM ...;
2205 we need to move subselects to hidden fields too. But since window
2206 functions accept only single-row and single-column subqueries other
2207 types are excluded.
2208 Indeed, a subquery of another type is wrapped in Item_in_optimizer at this
2209 stage, so when splitting Item_in_optimizer, if we added the underlying
2210 Item_subselect to "fields" below it would be later evaluated by
2211 copy_funcs() (in tmp table processing), which would be incorrect as the
2212 Item_subselect cannot be evaluated - as it must always be evaluated
2213 through its parent Item_in_optimizer.
2214
2215 (3) Exception from (1) is Item_view_ref which we need to wrap in
2216 Item_ref to allow fields from view being stored in tmp table.
2217 */
2218
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 318599 DBUG_PRINT("info", ("replacing %s with reference", item_name.ptr()));
2219
2220 318599 const bool old_hidden = hidden; // May be overwritten below.
2221
2222 // See if the item is already there. If it's not there
2223 // (the common case), we put it at the end.
2224 //
2225 // However, if a scalar-subquery-to-derived rewrite needed to process
2226 // a HAVING item, we might already be there (as a visible item).
2227 // If so, we must not add ourselves twice, or we'd overwrite the hidden
2228 // flag.
2229 uint el =
2230
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 318599 std::find(&ref_item_array[0], &ref_item_array[fields->size()], this) -
2231 318599 &ref_item_array[0];
2232
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 318599 if (el == fields->size()) {
2233 // Was not there from before, so add ourselves as a hidden item.
2234 318597 ref_item_array[el] = this;
2235 // Should also be absent from 'fields', for consistency.
2236
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 318597 assert(std::find(fields->begin(), fields->end(), this) == fields->end());
2237
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 318597 fields->push_front(this);
2238 318597 hidden = true;
2239 } else {
2240
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 2 assert(std::find(fields->begin(), fields->end(), this) != fields->end());
2241 }
2242
2243 Query_block *base_query_block;
2244 318599 Query_block *depended_from = nullptr;
2245
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 318599 if (type() == SUM_FUNC_ITEM && !m_is_window_function) {
2246 315035 Item_sum *const item = down_cast<Item_sum *>(this);
2247
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 315035 assert(thd->lex->current_query_block() == item->aggr_query_block);
2248 315035 base_query_block = item->base_query_block;
2249
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 315035 if (item->aggr_query_block != base_query_block)
2250 85 depended_from = item->aggr_query_block;
2251 } else {
2252 3564 base_query_block = thd->lex->current_query_block();
2253 }
2254
2255 Item_aggregate_ref *const item_ref = new Item_aggregate_ref(
2256 318599 &base_query_block->context, &ref_item_array[el], nullptr, nullptr,
2257
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 318599 item_name.ptr(), depended_from);
2258
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 318599 if (!item_ref) return; /* purecov: inspected */
2259 318599 item_ref->hidden = old_hidden;
2260
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 318599 if (ref == nullptr) {
2261
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 85 assert(is_sum_func);
2262 // Let 'ref' be the two elements of referenced_by[].
2263 85 ref = down_cast<Item_sum *>(this)->referenced_by[1];
2264
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 85 if (ref != nullptr) *ref = item_ref;
2265 85 ref = down_cast<Item_sum *>(this)->referenced_by[0];
2266
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 85 assert(ref);
2267 }
2268 // WL#6570 remove-after-qa
2269
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 318599 assert(thd->stmt_arena->is_regular() || !thd->lex->is_exec_started());
2270 318599 *ref = item_ref;
2271
2272 /*
2273 A WF must both be added to hidden list (done above), and be split so its
2274 arguments are added into the hidden list (done below):
2275 */
2276
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 318599 if (m_is_window_function) split_sum_func(thd, ref_item_array, fields);
2277 }
2278
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 757710 }
2279
2280 2624986 static bool left_is_superset(DTCollation *left, DTCollation *right) {
2281 /* Allow convert to Unicode */
2282
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 2624986 if (left->collation->state & MY_CS_UNICODE &&
2283
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 2437594 (left->derivation < right->derivation ||
2284
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 432711 (left->derivation == right->derivation &&
2285
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 302568 (!(right->collation->state & MY_CS_UNICODE) ||
2286 /* The code below makes 4-byte utf8 a superset over 3-byte utf8 */
2287
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 214867 (left->collation->state & MY_CS_UNICODE_SUPPLEMENT &&
2288
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 140502 !(right->collation->state & MY_CS_UNICODE_SUPPLEMENT) &&
2289
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 140500 left->collation->mbmaxlen > right->collation->mbmaxlen &&
2290
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 140471 left->collation->mbminlen == right->collation->mbminlen)))))
2291 2233043 return true;
2292 /* Allow convert from any Unicode to utf32 or utf8mb4 */
2293
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 391943 if (test_all_bits(left->collation->state,
2294 102004 MY_CS_UNICODE | MY_CS_UNICODE_SUPPLEMENT) &&
2295
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 102004 right->collation->state & MY_CS_UNICODE &&
2296
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 64278 left->derivation == right->derivation)
2297 43 return true;
2298 /* Allow convert from ASCII */
2299
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 391900 if (right->repertoire == MY_REPERTOIRE_ASCII &&
2300
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 179402 (left->derivation < right->derivation ||
2301
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 89111 (left->derivation == right->derivation &&
2302
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 30002 !(left->repertoire == MY_REPERTOIRE_ASCII))))
2303 120226 return true;
2304 /* Disallow conversion otherwise */
2305 271674 return false;
2306 }
2307
2308 /**
2309 Aggregate two collations together taking
2310 into account their coercibility (aka derivation):.
2311
2312 0 == DERIVATION_EXPLICIT - an explicitly written COLLATE clause @n
2313 1 == DERIVATION_NONE - a mix of two different collations @n
2314 2 == DERIVATION_IMPLICIT - a column @n
2315 3 == DERIVATION_COERCIBLE - a string constant.
2316
2317 The most important rules are:
2318 -# If collations are the same:
2319 chose this collation, and the strongest derivation.
2320 -# If collations are different:
2321 - Character sets may differ, but only if conversion without
2322 data loss is possible. The caller provides flags whether
2323 character set conversion attempts should be done. If no
2324 flags are substituted, then the character sets must be the same.
2325 Currently processed flags are:
2326 MY_COLL_ALLOW_SUPERSET_CONV - allow conversion to a superset
2327 MY_COLL_ALLOW_COERCIBLE_CONV - allow conversion of a coercible value
2328 - two EXPLICIT collations produce an error, e.g. this is wrong:
2329 CONCAT(expr1 collate latin1_swedish_ci, expr2 collate latin1_german_ci)
2330 - the side with smaller derivation value wins,
2331 i.e. a column is stronger than a string constant,
2332 an explicit COLLATE clause is stronger than a column.
2333 - if derivations are the same, we have DERIVATION_NONE,
2334 we'll wait for an explicit COLLATE clause which possibly can
2335 come from another argument later: for example, this is valid,
2336 but we don't know yet when collecting the first two arguments:
2337 @code
2338 CONCAT(latin1_swedish_ci_column,
2339 latin1_german1_ci_column,
2340 expr COLLATE latin1_german2_ci)
2341 @endcode
2342
2343 @retval true If the two collations are incompatible and cannot be aggregated.
2344
2345 @retval false If the two collations can be aggregated, possibly with
2346 DERIVATION_NONE to indicate that they need a third explicit collation as a
2347 tiebreaker.
2348
2349 */
2350
2351 32887213 bool DTCollation::aggregate(DTCollation &dt, uint flags) {
2352
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 32887213 if (!my_charset_same(collation, dt.collation)) {
2353 /*
2354 We do allow to use binary strings (like BLOBS)
2355 together with character strings.
2356 Binaries have more precedence than a character
2357 string of the same derivation.
2358 */
2359
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 5238064 if (collation == &my_charset_bin) {
2360
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 2484291 if (derivation <= dt.derivation)
2361 ; // Do nothing
2362 else {
2363 2431762 set(dt);
2364 }
2365
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 2753773 } else if (dt.collation == &my_charset_bin) {
2366
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 400339 if (dt.derivation <= derivation) {
2367 3576 set(dt);
2368 }
2369
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 4706867 } else if ((flags & MY_COLL_ALLOW_SUPERSET_CONV) &&
2370 2353433 left_is_superset(this, &dt)) {
2371 // Do nothing
2372
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 543106 } else if ((flags & MY_COLL_ALLOW_SUPERSET_CONV) &&
2373 271553 left_is_superset(&dt, this)) {
2374 271432 set(dt);
2375
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 121 } else if ((flags & MY_COLL_ALLOW_COERCIBLE_CONV) &&
2376
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 121 derivation < dt.derivation &&
2377
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 82 dt.derivation >= DERIVATION_SYSCONST) {
2378 // Do nothing;
2379
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 39 } else if ((flags & MY_COLL_ALLOW_COERCIBLE_CONV) &&
2380
2/2
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 39 dt.derivation < derivation &&
2381
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 9 derivation >= DERIVATION_SYSCONST) {
2382 9 set(dt);
2383 } else {
2384 // Cannot apply conversion
2385 30 set(&my_charset_bin, DERIVATION_NONE, (dt.repertoire | repertoire));
2386 30 return true;
2387 }
2388
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 27649161 } else if (derivation < dt.derivation) {
2389 // Do nothing
2390
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 5224856 } else if (dt.derivation < derivation) {
2391 176629 set(dt);
2392 } else {
2393
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✓ Branch 1 taken 4991173 times.
 5048227 if (collation == dt.collation) {
2394 // Do nothing
2395 } else {
2396
2/2
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✓ Branch 1 taken 57038 times.
 57054 if (derivation == DERIVATION_EXPLICIT) {
2397 16 set(nullptr, DERIVATION_NONE, 0);
2398 16 return true;
2399 }
2400
2401 // If we have two different binary collations for the same character set,
2402 // and none of them is explicit, we don't know which to choose. For
2403 // example: utf8mb4_bin is a binary padding collation, utf8mb4_0900_bin is
2404 // a binary non-padding collation. Cannot determine if the resulting
2405 // collation should be padding or non-padding, unless they are also
2406 // aggregated with a third explicit collation.
2407
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 57038 if ((collation->state & MY_CS_BINSORT) &&
2408
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 8985 (dt.collation->state & MY_CS_BINSORT)) {
2409 ✗ set(DERIVATION_NONE);
2410 ✗ return false;
2411 }
2412
2413 // When aggregating a binary and a non-binary collation for the same
2414 // character set, the binary collation is preferred.
2415
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 57038 if (collation->state & MY_CS_BINSORT) return false;
2416
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 48053 if (dt.collation->state & MY_CS_BINSORT) {
2417 47867 set(dt);
2418 47867 return false;
2419 }
2420 const CHARSET_INFO *bin =
2421 186 get_charset_by_csname(collation->csname, MY_CS_BINSORT, MYF(0));
2422 186 set(bin, DERIVATION_NONE);
2423 }
2424 }
2425 32830317 repertoire |= dt.repertoire;
2426 32830317 return false;
2427 }
2428
2429 /******************************/
2430 70 static void my_coll_agg_error(DTCollation &c1, DTCollation &c2,
2431 const char *fname) {
2432 140 my_error(ER_CANT_AGGREGATE_2COLLATIONS, MYF(0), c1.collation->m_coll_name,
2433 70 c1.derivation_name(), c2.collation->m_coll_name,
2434 c2.derivation_name(), fname);
2435 70 }
2436
2437 15 static void my_coll_agg_error(DTCollation &c1, DTCollation &c2, DTCollation &c3,
2438 const char *fname) {
2439 30 my_error(ER_CANT_AGGREGATE_3COLLATIONS, MYF(0), c1.collation->m_coll_name,
2440 15 c1.derivation_name(), c2.collation->m_coll_name,
2441 15 c2.derivation_name(), c3.collation->m_coll_name,
2442 c3.derivation_name(), fname);
2443 15 }
2444
2445 89 static void my_coll_agg_error(Item **args, uint count, const char *fname,
2446 int item_sep) {
2447
2/2
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 89 if (count == 2)
2448 70 my_coll_agg_error(args[0]->collation, args[item_sep]->collation, fname);
2449
2/2
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✓ Branch 1 taken 4 times.
 19 else if (count == 3)
2450 15 my_coll_agg_error(args[0]->collation, args[item_sep]->collation,
2451 15 args[2 * item_sep]->collation, fname);
2452 else
2453 4 my_error(ER_CANT_AGGREGATE_NCOLLATIONS, MYF(0), fname);
2454 89 }
2455
2456 21550710 static bool agg_item_collations(DTCollation &c, const char *fname, Item **av,
2457 uint count, uint flags, int item_sep) {
2458 uint i;
2459 Item **arg;
2460 21550710 bool unknown_cs = false;
2461
2462 21550710 c.set(av[0]->collation);
2463
2/2
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 39748592 for (i = 1, arg = &av[item_sep]; i < count; i++, arg++) {
2464
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✓ Branch 1 taken 18197844 times.
 18197891 if (c.aggregate((*arg)->collation, flags)) {
2465
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✓ Branch 3 taken 16 times.
 45 if (c.derivation == DERIVATION_NONE && c.collation == &my_charset_bin) {
2466 30 unknown_cs = true;
2467 30 continue;
2468 }
2469 15 my_coll_agg_error(av, count, fname, item_sep);
2470 16 return true;
2471 }
2472 }
2473
2474
4/4
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 21550701 if (unknown_cs && c.derivation != DERIVATION_EXPLICIT) {
2475 26 my_coll_agg_error(av, count, fname, item_sep);
2476 26 return true;
2477 }
2478
2479
4/4
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 21550675 if ((flags & MY_COLL_DISALLOW_NONE) && c.derivation == DERIVATION_NONE) {
2480 11 my_coll_agg_error(av, count, fname, item_sep);
2481 11 return true;
2482 }
2483
2484 /* If all arguments were numbers, reset to @@collation_connection */
2485
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✓ Branch 2 taken 194236 times.
✓ Branch 3 taken 13615938 times.
 21550664 if (flags & MY_COLL_ALLOW_NUMERIC_CONV && c.derivation == DERIVATION_NUMERIC)
2486 194236 c.set(Item::default_charset(), DERIVATION_COERCIBLE, MY_REPERTOIRE_NUMERIC);
2487
2488 21550663 return false;
2489 }
2490
2491 2749 bool agg_item_collations_for_comparison(DTCollation &c, const char *fname,
2492 Item **av, uint count, uint flags) {
2493 2749 return (agg_item_collations(c, fname, av, count,
2494 2749 flags | MY_COLL_DISALLOW_NONE, 1));
2495 }
2496
2497 36237246 bool agg_item_set_converter(DTCollation &coll, const char *fname, Item **args,
2498 uint nargs, uint, int item_sep, bool only_consts) {
2499 36237246 Item *safe_args[2] = {nullptr, nullptr};
2500
2501 /*
2502 For better error reporting: save the first and the second argument.
2503 We need this only if the the number of args is 3 or 2:
2504 - for a longer argument list, "Illegal mix of collations"
2505 doesn't display each argument's characteristics.
2506 - if nargs is 1, then this error cannot happen.
2507 */
2508
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✓ Branch 3 taken 673277 times.
 36237246 if (nargs >= 2 && nargs <= 3) {
2509 12375669 safe_args[0] = args[0];
2510 12375669 safe_args[1] = args[item_sep];
2511 }
2512
2513
1/2
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 36237246 THD *thd = current_thd;
2514
2515 uint i;
2516 Item **arg;
2517
2/2
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✓ Branch 1 taken 36237206 times.
 90670948 for (i = 0, arg = args; i < nargs; i++, arg += item_sep) {
2518 size_t dummy_offset;
2519 // If told so (from comparison code), only add converter for const values.
2520
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✓ Branch 6 taken 15354040 times.
✓ Branch 7 taken 39079713 times.
 91679275 if (only_consts && !(*arg)->const_item()) continue;
2521
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✓ Branch 2 taken 36760480 times.
✓ Branch 3 taken 2319236 times.
 39079713 if (!String::needs_conversion(1, (*arg)->collation.collation,
2522 coll.collation, &dummy_offset))
2523 36760480 continue;
2524
2525 /*
2526 No needs to add converter if an "arg" is NUMERIC or DATETIME
2527 value (which is pure ASCII) and at the same time target DTCollation
2528 is ASCII-compatible. For example, no needs to rewrite:
2529 SELECT * FROM t1 WHERE datetime_field = '2010-01-01';
2530 to
2531 SELECT * FROM t1 WHERE CONVERT(datetime_field USING cs) = '2010-01-01';
2532
2533 TODO: avoid conversion of any values with
2534 repertoire ASCII and 7bit-ASCII-compatible,
2535 not only numeric/datetime origin.
2536 */
2537
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 2319236 if ((*arg)->collation.derivation == DERIVATION_NUMERIC &&
2538
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✗ Branch 1 not taken.
 485497 (*arg)->collation.repertoire == MY_REPERTOIRE_ASCII &&
2539
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 485497 !((*arg)->collation.collation->state & MY_CS_NONASCII) &&
2540
2/2
✓ Branch 0 taken 485053 times.
✓ Branch 1 taken 444 times.
 485497 !(coll.collation->state & MY_CS_NONASCII))
2541 485053 continue;
2542
2543
1/2
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✗ Branch 1 not taken.
 1834183 Item *conv = (*arg)->safe_charset_converter(thd, coll.collation);
2544 // @todo - check why the constructors may return error
2545
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✓ Branch 2 taken 2 times.
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 1834221 if (thd->is_error()) return true;
2546
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✓ Branch 0 taken 123 times.
✓ Branch 1 taken 1834060 times.
 1834183 if (conv == nullptr &&
2547
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✓ Branch 1 taken 36 times.
 123 ((*arg)->collation.repertoire == MY_REPERTOIRE_ASCII))
2548
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 87 conv = new Item_func_conv_charset(thd, *arg, coll.collation, true);
2549
2550
2/2
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✓ Branch 1 taken 1834147 times.
 1834183 if (conv == nullptr) {
2551
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 36 if (nargs >= 2 && nargs <= 3) {
2552 /* restore the original arguments for better error message */
2553 36 args[0] = safe_args[0];
2554 36 args[item_sep] = safe_args[1];
2555 }
2556
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 36 my_coll_agg_error(args, nargs, fname, item_sep);
2557 36 return true;
2558 }
2559
2560 // Update the Item pointer in-place
2561
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 1834147 if (thd->lex->is_exec_started())
2562
1/2
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 3 thd->change_item_tree(arg, conv);
2563 else
2564 1834144 *arg = conv;
2565
2566
1/2
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 1834147 (*arg)->disable_constant_propagation(nullptr);
2567
2568
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✓ Branch 3 taken 1834147 times.
 1834147 if (conv->fix_fields(thd, arg)) return true;
2569 }
2570
2571 36237206 return false;
2572 }
2573
2574 /*
2575 Collect arguments' character sets together.
2576 We allow to apply automatic character set conversion in some cases.
2577 The conditions when conversion is possible are:
2578 - arguments A and B have different charsets
2579 - A wins according to coercibility rules
2580 (i.e. a column is stronger than a string constant,
2581 an explicit COLLATE clause is stronger than a column)
2582 - character set of A is either superset for character set of B,
2583 or B is a string constant which can be converted into the
2584 character set of A without data loss.
2585
2586 If all of the above is true, then it's possible to convert
2587 B into the character set of A, and then compare according
2588 to the collation of A.
2589
2590 For functions with more than two arguments:
2591
2592 collect(A,B,C) ::= collect(collect(A,B),C)
2593
2594 When a character set conversion is needed, the respective Item pointer
2595 is updated in-place as a permanent transformation.
2596
2597 If the items are not consecutive (eg. args[2] and args[5]), use the
2598 item_sep argument, ie.
2599
2600 agg_item_charsets(coll, fname, &args[2], 2, flags, 3)
2601 */
2602
2603 21547962 bool agg_item_charsets(DTCollation &coll, const char *fname, Item **args,
2604 uint nargs, uint flags, int item_sep, bool only_consts) {
2605
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 21547962 if (agg_item_collations(coll, fname, args, nargs, flags, item_sep))
2606 53 return true;
2607 21547914 return agg_item_set_converter(coll, fname, args, nargs, flags, item_sep,
2608 21547915 only_consts);
2609 }
2610
2611 17 void Item_ident_for_show::make_field(Send_field *tmp_field) {
2612 17 tmp_field->table_name = tmp_field->org_table_name = table_name;
2613 17 tmp_field->db_name = db_name;
2614 17 tmp_field->col_name = tmp_field->org_col_name = field->field_name;
2615 17 tmp_field->charsetnr = field->charset()->number;
2616 17 tmp_field->length = field->field_length;
2617 17 tmp_field->type = field->type();
2618 17 tmp_field->flags = field->all_flags();
2619
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✓ Branch 1 taken 17 times.
 17 if (field->table->is_nullable()) tmp_field->flags &= ~NOT_NULL_FLAG;
2620 17 tmp_field->decimals = field->decimals();
2621 17 tmp_field->field = false;
2622 17 }
2623
2624 17 bool Item_ident_for_show::fix_fields(THD *, Item **) {
2625 17 set_nullable(field->is_nullable());
2626 17 decimals = field->decimals();
2627 17 unsigned_flag = field->is_flag_set(UNSIGNED_FLAG);
2628 17 collation.set(field->charset(), field->derivation(), field->repertoire());
2629 17 set_data_type(field->type());
2630 17 max_length = char_to_byte_length_safe(field->char_length(),
2631 17 collation.collation->mbmaxlen);
2632
2633 17 fixed = true;
2634
2635 17 return false;
2636 }
2637
2638 /**
2639 Constructor used inside setup_wild().
2640 Item is resolved after construction.
2641 Item is supposed to have lifetime same as statement it is created within.
2642
2643 @param thd thread context
2644 @param context_arg Name resolution context for this field
2645 @param tr Table reference, provides table and schema name
2646 @param f Field reference, provides field name and original table name
2647 */
2648
2649 16314984 Item_field::Item_field(THD *thd, Name_resolution_context *context_arg,
2650 16314984 TABLE_LIST *tr, Field *f)
2651 16314984 : Item_ident(context_arg, f->table->s->db.str, *f->table_name,
2652 f->field_name),
2653 16315563 table_ref(tr),
2654 16315563 field(nullptr),
2655 16315563 item_equal(nullptr),
2656 16315563 field_index(NO_FIELD_INDEX),
2657 16315563 have_privileges(0),
2658 16314984 any_privileges(false) {
2659
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 16315563 set_field(f);
2660
2661 // Possibly override original names that were assigned from table reference:
2662
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✓ Branch 1 taken 15979405 times.
 16315022 if (f->orig_table_name != nullptr) m_orig_table_name = f->orig_table_name;
2663
2/2
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✓ Branch 1 taken 15979405 times.
 16315022 if (f->orig_db_name != nullptr) m_orig_db_name = f->orig_db_name;
2664 /*
2665 The field pointer may have shorter lifetime than the Item that is created
2666 here, so ensure the name is created in durable memory.
2667 */
2668
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 16315022 m_orig_field_name = thd->mem_strdup(f->field_name);
2669 16315237 field_name = m_orig_field_name;
2670 16315237 item_name.set(m_orig_field_name);
2671 16315623 }
2672
2673 /**
2674 Constructor used for internal information queries.
2675
2676 @param context_arg Name resolution context
2677 @param db_arg Schema name, may be NULL
2678 @param table_name_arg Table name, may be NULL if schema name is NULL
2679 @param field_name_arg Field name
2680 */
2681 2606 Item_field::Item_field(Name_resolution_context *context_arg, const char *db_arg,
2682 2606 const char *table_name_arg, const char *field_name_arg)
2683 : Item_ident(context_arg, db_arg, table_name_arg, field_name_arg),
2684 2606 table_ref(nullptr),
2685 2606 field(nullptr),
2686 2606 item_equal(nullptr),
2687 2606 field_index(NO_FIELD_INDEX),
2688 2606 have_privileges(0),
2689 2606 any_privileges(false) {
2690
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 2606 Query_block *select = current_thd->lex->current_query_block();
2691 2606 collation.set(DERIVATION_IMPLICIT);
2692
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 2606 if (select && select->parsing_place != CTX_HAVING)
2693 2606 select->select_n_where_fields++;
2694 2606 }
2695
2696 /**
2697 Used from parser to construct column references.
2698
2699 @param pos Parse context
2700 @param db_arg Schema name for column, may be NULL
2701 @param table_name_arg Table name for column, may be NULL if db_arg is NULL
2702 @param field_name_arg Column name, always given.
2703 */
2704 70121903 Item_field::Item_field(const POS &pos, const char *db_arg,
2705 70121903 const char *table_name_arg, const char *field_name_arg)
2706 : Item_ident(pos, db_arg, table_name_arg, field_name_arg),
2707 70122457 table_ref(nullptr),
2708 70122457 field(nullptr),
2709 70122457 item_equal(nullptr),
2710 70122457 field_index(NO_FIELD_INDEX),
2711 70122457 have_privileges(0),
2712 70121903 any_privileges(false) {
2713 70122457 collation.set(DERIVATION_IMPLICIT);
2714 70122373 }
2715
2716 70121944 bool Item_field::itemize(Parse_context *pc, Item **res) {
2717
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 70121944 if (skip_itemize(res)) return false;
2718
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 70122189 if (super::itemize(pc, res)) return true;
2719 70122331 Query_block *const select = pc->select;
2720
2/2
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✓ Branch 1 taken 3443 times.
 70122331 if (select->parsing_place != CTX_HAVING) select->select_n_where_fields++;
2721 70122331 return false;
2722 }
2723
2724 /**
2725 Used to create a copy (clone) of another Item_field.
2726 Item has same lifetime as the copied item.
2727
2728 @param thd thread handler
2729 @param item Column reference to make a copy from.
2730 */
2731
2732 425219 Item_field::Item_field(THD *thd, Item_field *item)
2733 : Item_ident(thd, item),
2734 425219 table_ref(item->table_ref),
2735 425219 field(item->field),
2736 425219 result_field(item->result_field),
2737 425219 item_equal(item->item_equal),
2738 425219 field_index(item->field_index),
2739 425219 no_constant_propagation(item->no_constant_propagation),
2740 425219 have_privileges(item->have_privileges),
2741 425219 any_privileges(item->any_privileges) {
2742 425219 collation.set(DERIVATION_IMPLICIT);
2743
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 425219 if (item->m_orig_table_name != nullptr)
2744 421075 m_orig_table_name = item->m_orig_table_name;
2745 else
2746 4144 m_orig_table_name = nullptr;
2747
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 425219 set_base_item_field(item);
2748 425224 }
2749
2750 /**
2751 Create column reference based on a table field.
2752
2753 @param f Pointer to field in a TABLE object
2754
2755 Item is resolved after construction.
2756 Notice that lifetime of object is limited to the lifetime of the
2757 supplied field.
2758 */
2759 3028170 Item_field::Item_field(Field *f)
2760 3028170 : Item_ident(nullptr, nullptr, *f->table_name, f->field_name),
2761 3028176 table_ref(nullptr),
2762 3028176 field(nullptr),
2763 3028176 item_equal(nullptr),
2764 3028176 field_index(NO_FIELD_INDEX),
2765 3028176 have_privileges(0),
2766 3028170 any_privileges(false) {
2767
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✓ Branch 1 taken 2906688 times.
 3028176 if (f->table->pos_in_table_list != nullptr)
2768 121488 context = &(f->table->pos_in_table_list->query_block->context);
2769
2770
1/2
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 3028176 set_field(f);
2771 3028173 }
2772
2773 /**
2774 Calculate the max column length not taking into account the
2775 limitations over integer types.
2776
2777 When storing data into fields the server currently just ignores the
2778 limits specified on integer types, e.g. 1234 can safely be stored in
2779 an int(2) and will not cause an error.
2780 Thus when creating temporary tables and doing transformations
2781 we must adjust the maximum field length to reflect this fact.
2782 We take the un-restricted maximum length and adjust it similarly to
2783 how the declared length is adjusted wrt unsignedness etc.
2784 TODO: this all needs to go when we disable storing 1234 in int(2).
2785
2786 @param field_par Original field the use to calculate the lengths
2787 @param max_length Item's calculated explicit max length
2788 @return The adjusted max length
2789 */
2790
2791 83325955 inline static uint32 adjust_max_effective_column_length(Field *field_par,
2792 uint32 max_length) {
2793 83325955 uint32 new_max_length = field_par->max_display_length();
2794
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✓ Branch 1 taken 61116685 times.
 83326107 uint32 sign_length = field_par->is_flag_set(UNSIGNED_FLAG) ? 0 : 1;
2795
2796
3/3
✓ Branch 0 taken 27306 times.
✓ Branch 1 taken 21391268 times.
✓ Branch 2 taken 61907834 times.
 83326282 switch (field_par->type()) {
2797 27306 case MYSQL_TYPE_INT24:
2798 /*
2799 Compensate for MAX_MEDIUMINT_WIDTH being 1 too long (8)
2800 compared to the actual number of digits that can fit into
2801 the column.
2802 */
2803 27306 new_max_length += 1;
2804 [[fallthrough]];
2805 21418574 case MYSQL_TYPE_LONG:
2806 case MYSQL_TYPE_TINY:
2807 case MYSQL_TYPE_SHORT:
2808
2809 /* Take out the sign and add a conditional sign */
2810 21418574 new_max_length = new_max_length - 1 + sign_length;
2811 21418574 break;
2812
2813 /* BINGINT is always 20 no matter the sign */
2814 61907834 case MYSQL_TYPE_LONGLONG:
2815 /* make gcc happy */
2816 default:
2817 61907834 break;
2818 }
2819
2820 /* Adjust only if the actual precision based one is bigger than specified */
2821
2/2
✓ Branch 0 taken 505377 times.
✓ Branch 1 taken 82821031 times.
 83326408 return new_max_length > max_length ? new_max_length : max_length;
2822 }
2823
2824 83326114 void Item_field::set_field(Field *field_par) {
2825 83326114 table_ref = field_par->table->pos_in_table_list;
2826
3/4
✓ Branch 0 taken 80307177 times.
✓ Branch 1 taken 3018937 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 80307177 times.
 83326114 assert(table_ref == nullptr || table_ref->table == field_par->table);
2827
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 83326476 times.
 83326114 assert(field_par->field_index() != NO_FIELD_INDEX);
2828 83326476 field_index = field_par->field_index();
2829
2830 83326665 field = result_field = field_par; // for easy coding with fields
2831
6/6
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✓ Branch 1 taken 28501568 times.
✓ Branch 2 taken 54795506 times.
✓ Branch 3 taken 29465 times.
✓ Branch 4 taken 2948250 times.
✓ Branch 5 taken 51847259 times.
 138122174 set_nullable(field->is_nullable() || field->is_tmp_nullable() ||
2832 54795506 field->table->is_nullable());
2833
2/2
✓ Branch 0 taken 80306855 times.
✓ Branch 1 taken 3019196 times.
 83326051 if (table_ref != nullptr) {
2834 80306855 table_name = table_ref->alias;
2835 80306855 m_orig_db_name = table_ref->db;
2836 80306855 db_name = m_orig_db_name;
2837 80306855 m_orig_table_name = table_ref->table_name;
2838
2/2
✓ Branch 0 taken 469839 times.
✓ Branch 1 taken 79837457 times.
 80306855 if (table_ref->is_derived()) {
2839 // Show underlying field's information
2840 469839 m_orig_db_name = field_par->orig_db_name;
2841 469839 m_orig_table_name = field_par->orig_table_name;
2842 }
2843 } else {
2844 3019196 m_orig_db_name = field_par->orig_db_name;
2845 3019196 db_name = m_orig_db_name;
2846 3019196 m_orig_table_name = field_par->orig_table_name;
2847 3019196 table_name = m_orig_table_name;
2848 }
2849
2850 83326492 m_orig_field_name = field_par->field_name;
2851 83325770 collation.set(field_par->charset(), field_par->derivation(),
2852 83326492 field_par->repertoire());
2853 83326255 set_data_type(field_par->type());
2854 83325946 decimals = field->decimals();
2855 83326206 unsigned_flag = field_par->is_flag_set(UNSIGNED_FLAG);
2856 83326669 max_length = char_to_byte_length_safe(field_par->char_length(),
2857 83326006 collation.collation->mbmaxlen);
2858
2859 83326277 max_length = adjust_max_effective_column_length(field_par, max_length);
2860
2861
2/2
✓ Branch 0 taken 1633883 times.
✓ Branch 1 taken 81692650 times.
 83326533 if (field->table->s->tmp_table == SYSTEM_TMP_TABLE) any_privileges = false;
2862
2/2
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✓ Branch 1 taken 375954 times.
 83326533 if (!can_use_prefix_key)
2863 82950579 field->table->covering_keys.subtract(field->part_of_prefixkey);
2864
2865 83325747 fixed = true;
2866 83325747 }
2867
2868 /**
2869 Reset this item to point to a field from the new temporary table.
2870 This is used when we create a new temporary table for each execution
2871 of prepared statement.
2872 */
2873
2874 117 void Item_field::reset_field(Field *f) {
2875 117 set_field(f);
2876 /* 'name' is pointing at field->field_name of old field */
2877 117 item_name.set(f->field_name);
2878 117 }
2879
2880 14350 const char *Item_ident::full_name() const {
2881 14350 const char *f_name =
2882
1/2
✓ Branch 0 taken 14350 times.
✗ Branch 1 not taken.
 14350 m_orig_field_name != nullptr ? m_orig_field_name : field_name;
2883 char *tmp;
2884
3/4
✓ Branch 0 taken 13185 times.
✓ Branch 1 taken 1165 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 13185 times.
 14350 if (table_name == nullptr || f_name == nullptr)
2885 return f_name != nullptr
2886
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1165 times.
 1165 ? f_name
2887
0/2
✗ Branch 0 not taken.
✗ Branch 1 not taken.
 1165 : item_name.is_set() ? item_name.ptr() : "tmp_field";
2888
4/4
✓ Branch 0 taken 13095 times.
✓ Branch 1 taken 90 times.
✓ Branch 2 taken 12977 times.
✓ Branch 3 taken 118 times.
 13185 if (db_name && db_name[0]) {
2889 12977 tmp = pointer_cast<char *>(
2890 12977 (*THR_MALLOC)
2891 12977 ->Alloc(strlen(db_name) + strlen(table_name) + strlen(f_name) + 3));
2892 12977 strxmov(tmp, db_name, ".", table_name, ".", f_name, NullS);
2893 } else {
2894
1/2
✓ Branch 0 taken 208 times.
✗ Branch 1 not taken.
 208 if (table_name[0]) {
2895 208 tmp = pointer_cast<char *>(
2896 208 (*THR_MALLOC)->Alloc(strlen(table_name) + strlen(f_name) + 2));
2897 208 strxmov(tmp, table_name, ".", f_name, NullS);
2898 } else
2899 ✗ return f_name;
2900 }
2901 13185 return tmp;
2902 }
2903
2904 5191318 void Item_ident::print(const THD *thd, String *str, enum_query_type query_type,
2905 const char *db_name_arg,
2906 const char *table_name_arg) const {
2907 char d_name_buff[MAX_ALIAS_NAME], t_name_buff[MAX_ALIAS_NAME];
2908 5191318 const char *d_name = db_name_arg;
2909 5191318 const char *t_name = table_name_arg;
2910 5191318 const char *f_name =
2911
2/2
✓ Branch 0 taken 5190662 times.
✓ Branch 1 taken 656 times.
 5191318 m_orig_field_name != nullptr ? m_orig_field_name : field_name;
2912
2913
4/4
✓ Branch 0 taken 4575099 times.
✓ Branch 1 taken 616219 times.
✓ Branch 2 taken 616220 times.
✓ Branch 3 taken 4575098 times.
 9766417 if (lower_case_table_names == 1 ||
2914 // mode '2' does not apply to aliases:
2915
1/6
✗ Branch 0 not taken.
✓ Branch 1 taken 4575099 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
✗ Branch 4 not taken.
✗ Branch 5 not taken.
 4575099 (lower_case_table_names == 2 && !alias_name_used())) {
2916
4/4
✓ Branch 0 taken 615290 times.
✓ Branch 1 taken 930 times.
✓ Branch 2 taken 614368 times.
✓ Branch 3 taken 922 times.
 616220 if (table_name_arg && table_name_arg[0]) {
2917 614368 my_stpcpy(t_name_buff, table_name_arg);
2918
1/2
✓ Branch 0 taken 614368 times.
✗ Branch 1 not taken.
 614368 my_casedn_str(files_charset_info, t_name_buff);
2919 614368 t_name = t_name_buff;
2920 }
2921
4/4
✓ Branch 0 taken 615290 times.
✓ Branch 1 taken 930 times.
✓ Branch 2 taken 597945 times.
✓ Branch 3 taken 17345 times.
 616220 if (db_name_arg && db_name_arg[0]) {
2922 597945 my_stpcpy(d_name_buff, db_name_arg);
2923
1/2
✓ Branch 0 taken 597945 times.
✗ Branch 1 not taken.
 597945 my_casedn_str(files_charset_info, d_name_buff);
2924 597945 d_name = d_name_buff;
2925 }
2926 }
2927
2928
5/6
✓ Branch 0 taken 5148929 times.
✓ Branch 1 taken 42389 times.
✓ Branch 2 taken 5148929 times.
✗ Branch 3 not taken.
✓ Branch 4 taken 2 times.
✓ Branch 5 taken 5148927 times.
 5191318 if (table_name_arg == nullptr || f_name == nullptr || !f_name[0]) {
2929
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 42368 times.
 42370 const char *nm = (f_name != nullptr && f_name[0])
2930
2/2
✓ Branch 0 taken 42370 times.
✓ Branch 1 taken 21 times.
 84782 ? f_name
2931
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 21 times.
 23 : item_name.is_set() ? item_name.ptr() : "tmp_field";
2932
1/2
✓ Branch 0 taken 42391 times.
✗ Branch 1 not taken.
 42391 append_identifier(thd, str, nm, strlen(nm));
2933 42391 return;
2934 }
2935
2936
8/8
✓ Branch 0 taken 5147869 times.
✓ Branch 1 taken 1058 times.
✓ Branch 2 taken 5147813 times.
✓ Branch 3 taken 56 times.
✓ Branch 4 taken 4995995 times.
✓ Branch 5 taken 151818 times.
✓ Branch 6 taken 2916461 times.
✓ Branch 7 taken 2232466 times.
 10144922 if (!(query_type & QT_NO_DB) && db_name_arg && db_name_arg[0] &&
2937
3/4
✓ Branch 0 taken 4995995 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 2916460 times.
✓ Branch 3 taken 2079535 times.
 4995995 !alias_name_used()) {
2938 2916461 const size_t d_name_len = strlen(d_name);
2939
4/4
✓ Branch 0 taken 60253 times.
✓ Branch 1 taken 2856208 times.
✓ Branch 2 taken 2866016 times.
✓ Branch 3 taken 50445 times.
 2976714 if (!((query_type & QT_NO_DEFAULT_DB) &&
2940
3/4
✓ Branch 0 taken 60253 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 9808 times.
✓ Branch 3 taken 50445 times.
 60253 db_is_default_db(d_name, d_name_len, thd))) {
2941
1/2
✓ Branch 0 taken 2866016 times.
✗ Branch 1 not taken.
 2866016 append_identifier(thd, str, d_name, d_name_len);
2942
1/2
✓ Branch 0 taken 2866016 times.
✗ Branch 1 not taken.
 2866016 str->append('.');
2943 }
2944 }
2945
4/4
✓ Branch 0 taken 5147870 times.
✓ Branch 1 taken 1057 times.
✓ Branch 2 taken 5133253 times.
✓ Branch 3 taken 14617 times.
 5148927 if (!(query_type & QT_NO_TABLE) && table_name_arg[0]) {
2946
1/2
✓ Branch 0 taken 5133253 times.
✗ Branch 1 not taken.
 5133253 append_identifier(thd, str, t_name, strlen(t_name));
2947
1/2
✓ Branch 0 taken 5133253 times.
✗ Branch 1 not taken.
 5133253 str->append('.');
2948 }
2949
1/2
✓ Branch 0 taken 5148928 times.
✗ Branch 1 not taken.
 5148927 append_identifier(thd, str, f_name, strlen(f_name));
2950 }
2951
2952 598 TYPELIB *Item_field::get_typelib() const {
2953 598 return down_cast<Field_enum *>(field)->typelib;
2954 }
2955
2956 656424746 String *Item_field::val_str(String *str) {
2957
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 656424746 times.
 656424746 assert(fixed == 1);
2958
2/2
✓ Branch 0 taken 29927040 times.
✓ Branch 1 taken 626497886 times.
 656424746 if ((null_value = field->is_null())) return nullptr;
2959 626497886 str->set_charset(str_value.charset());
2960 626497881 return field->val_str(str, &str_value);
2961 }
2962
2963 865458 bool Item_field::val_json(Json_wrapper *result) {
2964
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 865458 times.
 865458 assert(fixed);
2965
3/4
✓ Branch 0 taken 1112 times.
✓ Branch 1 taken 864515 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 1112 times.
 865458 assert(data_type() == MYSQL_TYPE_JSON || returns_array());
2966 865627 null_value = field->is_null();
2967
2/2
✓ Branch 0 taken 2207 times.
✓ Branch 1 taken 863499 times.
 865706 if (null_value) return false;
2968 863499 return down_cast<Field_json *>(field)->val_json(result);
2969 }
2970
2971 7723195 double Item_field::val_real() {
2972
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 7723195 times.
 7723195 assert(fixed == 1);
2973
2/2
✓ Branch 0 taken 45696 times.
✓ Branch 1 taken 7677504 times.
 7723195 if ((null_value = field->is_null())) return 0.0;
2974 7677504 return field->val_real();
2975 }
2976
2977 381246789 longlong Item_field::val_int() {
2978
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 381246789 times.
 381246789 assert(fixed == 1);
2979
2/2
✓ Branch 0 taken 16970584 times.
✓ Branch 1 taken 364276701 times.
 381246789 if ((null_value = field->is_null())) return 0;
2980 364276701 return field->val_int();
2981 }
2982
2983 7603 longlong Item_field::val_time_temporal() {
2984
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 7603 times.
 7603 assert(fixed == 1);
2985
2/2
✓ Branch 0 taken 200 times.
✓ Branch 1 taken 7403 times.
 7603 if ((null_value = field->is_null())) return 0;
2986 7403 return field->val_time_temporal();
2987 }
2988
2989 85941 longlong Item_field::val_date_temporal() {
2990
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 85941 times.
 85941 assert(fixed == 1);
2991
2/2
✓ Branch 0 taken 880 times.
✓ Branch 1 taken 85061 times.
 85941 if ((null_value = field->is_null())) return 0;
2992 85061 return field->val_date_temporal();
2993 }
2994
2995 10045 longlong Item_field::val_time_temporal_at_utc() {
2996
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 10045 times.
 10045 assert(fixed == 1);
2997
2/2
✓ Branch 0 taken 155 times.
✓ Branch 1 taken 9890 times.
 10045 if ((null_value = field->is_null())) return 0;
2998 9890 return field->val_time_temporal_at_utc();
2999 }
3000
3001 45583 longlong Item_field::val_date_temporal_at_utc() {
3002
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 45583 times.
 45583 assert(fixed == 1);
3003
2/2
✓ Branch 0 taken 1733 times.
✓ Branch 1 taken 43850 times.
 45583 if ((null_value = field->is_null())) return 0;
3004 43850 return field->val_date_temporal_at_utc();
3005 }
3006
3007 37001583 my_decimal *Item_field::val_decimal(my_decimal *decimal_value) {
3008 37001583 null_value = field->is_null();
3009
2/2
✓ Branch 0 taken 407404 times.
✓ Branch 1 taken 36594179 times.
 37001583 if (null_value) return nullptr;
3010 36594179 return field->val_decimal(decimal_value);
3011 }
3012
3013 20651 bool Item_field::get_date(MYSQL_TIME *ltime, my_time_flags_t fuzzydate) {
3014
6/6
✓ Branch 0 taken 19452 times.
✓ Branch 1 taken 1199 times.
✓ Branch 2 taken 592 times.
✓ Branch 3 taken 18860 times.
✓ Branch 4 taken 1791 times.
✓ Branch 5 taken 18860 times.
 20651 if ((null_value = field->is_null()) || field->get_date(ltime, fuzzydate)) {
3015 1791 memset(ltime, 0, sizeof(*ltime));
3016 1791 return true;
3017 }
3018 18860 return false;
3019 }
3020
3021 3326 bool Item_field::get_time(MYSQL_TIME *ltime) {
3022
6/6
✓ Branch 0 taken 3176 times.
✓ Branch 1 taken 150 times.
✓ Branch 2 taken 145 times.
✓ Branch 3 taken 3031 times.
✓ Branch 4 taken 295 times.
✓ Branch 5 taken 3031 times.
 3326 if ((null_value = field->is_null()) || field->get_time(ltime)) {
3023 295 memset(ltime, 0, sizeof(*ltime));
3024 295 return true;
3025 }
3026 3031 return false;
3027 }
3028
3029 2045 bool Item_field::get_timeval(my_timeval *tm, int *warnings) {
3030
2/2
✓ Branch 0 taken 45 times.
✓ Branch 1 taken 2000 times.
 2045 if ((null_value = field->is_null())) return true;
3031
2/2
✓ Branch 0 taken 19 times.
✓ Branch 1 taken 1981 times.
 2000 if (field->get_timestamp(tm, warnings)) tm->m_tv_sec = tm->m_tv_usec = 0;
3032 2000 return false;
3033 }
3034
3035 13103748 bool Item_field::eq(const Item *item, bool) const {
3036 13103748 const Item *real_item = item->real_item();
3037
2/2
✓ Branch 0 taken 3225107 times.
✓ Branch 1 taken 9878643 times.
 13103743 if (real_item->type() != FIELD_ITEM) return false;
3038
3039 9878643 const Item_field *item_field = down_cast<const Item_field *>(real_item);
3040
3041 /*
3042 If both Item_field objects are properly resolved, return true if they both
3043 refer to the same underlying table field. If one or both fields refer to
3044 temporary table fields derived from some base table field, return true
3045 also if they refer to the same base table field.
3046 The original table's name and original field's name cannot serve here,
3047 consider: SELECT a FROM t1 WHERE b IN (SELECT a FROM t1)
3048 where the semijoin-merged 'a' and the top query's 'a' are both named t1.a
3049 and coexist in the top query.
3050 */
3051
4/4
✓ Branch 0 taken 9624575 times.
✓ Branch 1 taken 254071 times.
✓ Branch 2 taken 9624365 times.
✓ Branch 3 taken 210 times.
 9878646 if (fixed && item_field->fixed)
3052 9624365 return base_item_field()->field == item_field->base_item_field()->field;
3053 /*
3054 We may come here when we are trying to find a function in a GROUP BY
3055 clause from the select list.
3056 In this case the '100 % correct' way to do this would be to first
3057 run fix_fields() on the GROUP BY item and then retry this function, but
3058 I think it's better to relax the checking a bit as we will in
3059 most cases do the correct thing by just checking the field name.
3060 (In cases where we would choose wrong we would have to generate a
3061 ER_NON_UNIQ_ERROR).
3062 */
3063
2/2
✓ Branch 0 taken 145131 times.
✓ Branch 1 taken 109157 times.
 399412 return (item_field->item_name.eq_safe(field_name) &&
3064
4/4
✓ Branch 0 taken 144911 times.
✓ Branch 1 taken 220 times.
✓ Branch 2 taken 126214 times.
✓ Branch 3 taken 18697 times.
 145131 (!item_field->table_name || !table_name ||
3065
2/2
✓ Branch 0 taken 126212 times.
✓ Branch 1 taken 2 times.
 126214 (!my_strcasecmp(table_alias_charset, item_field->table_name,
3066 126212 table_name) &&
3067
3/4
✓ Branch 0 taken 126212 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 53674 times.
✓ Branch 3 taken 72538 times.
 126212 (!item_field->db_name || !db_name ||
3068
2/4
✓ Branch 0 taken 53674 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 53674 times.
✗ Branch 3 not taken.
 307962 (item_field->db_name && !strcmp(item_field->db_name, db_name))))));
3069 }
3070
3071 11874153683 table_map Item_field::used_tables() const {
3072
2/2
✓ Branch 0 taken 268784 times.
✓ Branch 1 taken 11873884899 times.
 11874153683 if (!table_ref) return 1; // Temporary table; always table 0
3073
2/2
✓ Branch 0 taken 332530 times.
✓ Branch 1 taken 11873552369 times.
 11873884899 if (table_ref->table->const_table) return 0; // const item
3074
2/2
✓ Branch 0 taken 11873448325 times.
✓ Branch 1 taken 104044 times.
 11873552369 return depended_from ? OUTER_REF_TABLE_BIT : table_ref->map();
3075 }
3076
3077 7153 bool Item_field::used_tables_for_level(uchar *arg) {
3078 7153 const TABLE_LIST *tr = field->table->pos_in_table_list;
3079 // Used by resolver only, so can never reach a "const" table.
3080
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 7153 times.
 7153 assert(!tr->table->const_table);
3081 7153 Used_tables *const ut = pointer_cast<Used_tables *>(arg);
3082 /*
3083 When the qualifying query for the field (table_ref->query_block) is the same
3084 level as the requested level, add the table's map.
3085 When the qualifying query for the field is outer relative to the
3086 requested level, add an outer reference.
3087 */
3088
2/2
✓ Branch 0 taken 7141 times.
✓ Branch 1 taken 12 times.
 7153 if (ut->select == tr->query_block)
3089 7141 ut->used_tables |= tr->map();
3090
2/2
✓ Branch 0 taken 6 times.
✓ Branch 1 taken 6 times.
 12 else if (ut->select->nest_level > tr->query_block->nest_level)
3091 6 ut->used_tables |= OUTER_REF_TABLE_BIT;
3092
3093 7153 return false;
3094 }
3095
3096 37052264 void Item_ident::fix_after_pullout(Query_block *parent_query_block,
3097 Query_block *removed_query_block) {
3098 /*
3099 Some field items may be created for use in execution only, without
3100 a name resolution context. They have already been used in execution,
3101 so no transformation is necessary here.
3102
3103 @todo: Provide strict phase-division in optimizer, to make sure that
3104 execution-only objects do not exist during transformation stage.
3105 Then, this test would be deemed unnecessary.
3106 */
3107
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 37052264 times.
 37052264 if (context == nullptr) {
3108 ✗ assert(type() == FIELD_ITEM);
3109 ✗ return;
3110 }
3111
3112 // context->query_block should already have been updated.
3113
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 37052264 times.
 37052264 assert(context->query_block != removed_query_block);
3114
3115
2/2
✓ Branch 0 taken 37041118 times.
✓ Branch 1 taken 11146 times.
 37052264 if (context->query_block == parent_query_block) {
3116
2/2
✓ Branch 0 taken 360 times.
✓ Branch 1 taken 37040758 times.
 37041118 if (parent_query_block == depended_from) {
3117 360 depended_from = nullptr;
3118 // Update the context of this field to that of the parent query
3119 // block since the resolver place is now lifted from the abandoned
3120 // query block to this one.
3121 360 context = &parent_query_block->context;
3122 }
3123 } else {
3124 /*
3125 The definition scope of this field item reference is inner to the removed
3126 query_block object.
3127 No new resolution is needed, but we may need to update the dependency.
3128 */
3129
2/2
✓ Branch 0 taken 1596 times.
✓ Branch 1 taken 9550 times.
 11146 if (removed_query_block == depended_from)
3130 1596 depended_from = parent_query_block;
3131 }
3132
3133
2/2
✓ Branch 0 taken 1792 times.
✓ Branch 1 taken 37050472 times.
 37052264 if (depended_from) {
3134 /*
3135 Refresh used_tables information for subqueries between the definition
3136 scope and resolution scope of the field item reference.
3137 */
3138 1792 Query_block *child_query_block = context->query_block;
3139
3140
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 1872 while (child_query_block->outer_query_block() != depended_from) {
3141 /*
3142 The subquery on this level is outer-correlated with respect to the field
3143 */
3144
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 80 child_query_block->master_query_expression()->accumulate_used_tables(
3145 OUTER_REF_TABLE_BIT);
3146 80 child_query_block = child_query_block->outer_query_block();
3147 }
3148
3149 /*
3150 child_query_block is query_block immediately inner to the depended_from
3151 level. Now, locate the subquery predicate that contains this query_block
3152 and update used tables information.
3153 */
3154 1792 Used_tables ut(depended_from);
3155
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 1792 (void)walk(&Item::used_tables_for_level, enum_walk::SUBQUERY_POSTFIX,
3156 pointer_cast<uchar *>(&ut));
3157
1/2
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✗ Branch 1 not taken.
 1792 child_query_block->master_query_expression()->accumulate_used_tables(
3158 ut.used_tables);
3159 }
3160 }
3161
3162 63408 Item *Item_field::get_tmp_table_item(THD *thd) {
3163
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 63408 DBUG_TRACE;
3164
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 63407 Item_field *new_item = new Item_field(thd, this);
3165
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 63408 if (!new_item) return nullptr; /* purecov: inspected */
3166
3167 63408 new_item->field = new_item->result_field;
3168 63408 new_item->table_ref = nullptr; // Internal temporary table has no table_ref
3169
3170 63408 return new_item;
3171 63408 }
3172
3173 10031 longlong Item_field::val_int_endpoint(bool, bool *) {
3174 10031 longlong res = val_int();
3175
2/2
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✓ Branch 1 taken 9911 times.
 10031 return null_value ? LLONG_MIN : res;
3176 }
3177
3178 /**
3179 Init an item from a string we KNOW points to a valid longlong.
3180 str_arg does not necessary has to be a \\0 terminated string.
3181 This is always 'signed'. Unsigned values are created with Item_uint()
3182 */
3183 55958 void Item_int::init(const char *str_arg, uint length) {
3184 55958 const char *end_ptr = str_arg + length;
3185 int error;
3186
1/2
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 55958 value = my_strtoll10(str_arg, &end_ptr, &error);
3187 55958 set_max_size(static_cast<uint>(end_ptr - str_arg));
3188
1/2
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 55958 item_name.copy(str_arg, max_length);
3189 55958 fixed = true;
3190 55958 }
3191
3192 2854921 my_decimal *Item_int::val_decimal(my_decimal *decimal_value) {
3193 2854921 int2my_decimal(E_DEC_FATAL_ERROR, value, unsigned_flag, decimal_value);
3194 2854921 return decimal_value;
3195 }
3196
3197 279647 String *Item_int::val_str(String *str) {
3198 // following assert is redundant, because fixed=1 assigned in constructor
3199
1/2
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✓ Branch 1 taken 279647 times.
 279647 assert(fixed == 1);
3200 279647 str->set_int(value, unsigned_flag, collation.collation);
3201 279647 return str;
3202 }
3203
3204 947595 void Item_int::print(const THD *, String *str,
3205 enum_query_type query_type) const {
3206
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 947595 if (query_type & QT_NORMALIZED_FORMAT) {
3207
1/2
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✗ Branch 1 not taken.
 256 str->append("?");
3208 256 return;
3209 }
3210 // my_charset_bin is good enough for numbers
3211
3212 // don't rewrite booleans as ints. see bug#21296173
3213 947339 const Name_string *const name = &item_name;
3214
3/4
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✓ Branch 3 taken 870868 times.
 947339 const bool is_literal_false = name->is_set() && name->eq("FALSE");
3215
3/4
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 947340 const bool is_literal_true = name->is_set() && name->eq("TRUE");
3216
2/4
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✓ Branch 3 taken 947340 times.
 947340 if (is_literal_false || is_literal_true) {
3217 ✗ str->append(item_name.ptr(), item_name.length(), str->charset());
3218 } else {
3219
2/2
✓ Branch 0 taken 720 times.
✓ Branch 1 taken 946620 times.
 947340 if (unsigned_flag)
3220 720 str->append_ulonglong(value);
3221 else
3222 946620 str->append_longlong(value);
3223 }
3224 }
3225
3226 12 String *Item_uint::val_str(String *str) {
3227 // following assert is redundant, because fixed=1 assigned in constructor
3228
1/2
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✓ Branch 1 taken 12 times.
 12 assert(fixed == 1);
3229 12 str->set((ulonglong)value, collation.collation);
3230 12 return str;
3231 }
3232
3233 8911 void Item_uint::print(const THD *, String *str,
3234 enum_query_type query_type) const {
3235
2/2
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 8911 if (query_type & QT_NORMALIZED_FORMAT) {
3236
1/2
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✗ Branch 1 not taken.
 5 str->append("?");
3237 5 return;
3238 }
3239 8906 str->append_ulonglong(value);
3240 }
3241
3242 287335 Item_decimal::Item_decimal(const POS &pos, const char *str_arg, uint length,
3243 287335 const CHARSET_INFO *charset)
3244 287335 : super(pos) {
3245
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 287335 str2my_decimal(E_DEC_FATAL_ERROR, str_arg, length, charset, &decimal_value);
3246 287335 item_name.set(str_arg);
3247 287335 set_data_type(MYSQL_TYPE_NEWDECIMAL);
3248 287335 decimals = (uint8)decimal_value.frac;
3249 287335 fixed = true;
3250 574670 max_length = my_decimal_precision_to_length_no_truncation(
3251 287335 decimal_value.intg + decimals, decimals, unsigned_flag);
3252 287335 }
3253
3254 175 Item_decimal::Item_decimal(longlong val, bool unsig) {
3255
1/2
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 175 int2my_decimal(E_DEC_FATAL_ERROR, val, unsig, &decimal_value);
3256 175 set_data_type(MYSQL_TYPE_NEWDECIMAL);
3257 175 decimals = (uint8)decimal_value.frac;
3258 175 fixed = true;
3259 350 max_length = my_decimal_precision_to_length_no_truncation(
3260 175 decimal_value.intg + decimals, decimals, unsigned_flag);
3261 175 }
3262
3263 3 Item_decimal::Item_decimal(double val) {
3264
1/2
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✗ Branch 1 not taken.
 3 double2my_decimal(E_DEC_FATAL_ERROR, val, &decimal_value);
3265 3 set_data_type(MYSQL_TYPE_NEWDECIMAL);
3266 3 decimals = (uint8)decimal_value.frac;
3267 3 fixed = true;
3268 6 max_length = my_decimal_precision_to_length_no_truncation(
3269 3 decimal_value.intg + decimals, decimals, unsigned_flag);
3270 3 }
3271
3272 ✗ Item_decimal::Item_decimal(const Name_string &name_arg,
3273 const my_decimal *val_arg, uint decimal_par,
3274 ✗ uint length) {
3275 ✗ my_decimal2decimal(val_arg, &decimal_value);
3276 ✗ item_name = name_arg;
3277 ✗ set_data_type(MYSQL_TYPE_NEWDECIMAL);
3278 ✗ decimals = (uint8)decimal_par;
3279 ✗ max_length = length;
3280 ✗ fixed = true;
3281 }
3282
3283 2022 Item_decimal::Item_decimal(my_decimal *value_par) {
3284
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 2022 my_decimal2decimal(value_par, &decimal_value);
3285 2022 set_data_type(MYSQL_TYPE_NEWDECIMAL);
3286 2022 decimals = (uint8)decimal_value.frac;
3287 2022 fixed = true;
3288 4044 max_length = my_decimal_precision_to_length_no_truncation(
3289 2022 decimal_value.intg + decimals, decimals, unsigned_flag);
3290 2022 }
3291
3292 7 Item_decimal::Item_decimal(const uchar *bin, int precision, int scale) {
3293
1/2
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✗ Branch 1 not taken.
 7 binary2my_decimal(E_DEC_FATAL_ERROR, bin, &decimal_value, precision, scale);
3294 7 set_data_type(MYSQL_TYPE_NEWDECIMAL);
3295 7 decimals = (uint8)decimal_value.frac;
3296 7 fixed = true;
3297 14 max_length = my_decimal_precision_to_length_no_truncation(precision, decimals,
3298 7 unsigned_flag);
3299 7 }
3300
3301 127 longlong Item_decimal::val_int() {
3302 longlong result;
3303
1/2
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 127 my_decimal2int(E_DEC_FATAL_ERROR, &decimal_value, unsigned_flag, &result);
3304 127 return result;
3305 }
3306
3307 24484 double Item_decimal::val_real() {
3308 double result;
3309
1/2
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 24484 my_decimal2double(E_DEC_FATAL_ERROR, &decimal_value, &result);
3310 24483 return result;
3311 }
3312
3313 217 String *Item_decimal::val_str(String *result) {
3314 217 result->set_charset(&my_charset_numeric);
3315 217 my_decimal2string(E_DEC_FATAL_ERROR, &decimal_value, result);
3316 217 return result;
3317 }
3318
3319 15083 void Item_decimal::print(const THD *, String *str,
3320 enum_query_type query_type) const {
3321
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 15083 if (query_type & QT_NORMALIZED_FORMAT) {
3322
1/2
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 15 str->append("?");
3323 15 return;
3324 }
3325 15068 StringBuffer<MAX_DOUBLE_STR_LENGTH + 1> tmp; // +1 for terminating null
3326
1/2
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 15068 my_decimal2string(E_DEC_FATAL_ERROR, &decimal_value, &tmp);
3327
1/2
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 15068 str->append(tmp);
3328 15068 }
3329
3330 1068 bool Item_decimal::eq(const Item *item, bool) const {
3331
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 1068 if (type() == item->type() && item->basic_const_item()) {
3332 /*
3333 We need to cast off const to call val_decimal(). This should
3334 be OK for a basic constant. Additionally, we can pass nullptr as
3335 a true decimal constant will return its internal decimal
3336 storage and ignore the argument.
3337 */
3338 784 Item *arg = const_cast<Item *>(item);
3339 784 const my_decimal *value = arg->val_decimal(nullptr);
3340 784 return !my_decimal_cmp(&decimal_value, value);
3341 }
3342 284 return false;
3343 }
3344
3345 88 void Item_decimal::set_decimal_value(const my_decimal *value_par) {
3346 88 my_decimal2decimal(value_par, &decimal_value);
3347 88 decimals = (uint8)decimal_value.frac;
3348 88 unsigned_flag = !decimal_value.sign();
3349 176 max_length = my_decimal_precision_to_length_no_truncation(
3350 88 decimal_value.intg + decimals, decimals, unsigned_flag);
3351 88 }
3352
3353 33 String *Item_float::val_str(String *str) {
3354 // following assert is redundant, because fixed=1 assigned in constructor
3355
1/2
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✓ Branch 1 taken 33 times.
 33 assert(fixed == 1);
3356 33 str->set_real(value, decimals, &my_charset_bin);
3357 33 return str;
3358 }
3359
3360 125 my_decimal *Item_float::val_decimal(my_decimal *decimal_value) {
3361 // following assert is redundant, because fixed=1 assigned in constructor
3362
1/2
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✓ Branch 1 taken 125 times.
 125 assert(fixed == 1);
3363 125 double2my_decimal(E_DEC_FATAL_ERROR, value, decimal_value);
3364 125 return (decimal_value);
3365 }
3366
3367 477 bool Item_string::set_str_with_copy(const char *str_arg, uint length_arg,
3368 const CHARSET_INFO *from_cs) {
3369 unsigned errors;
3370
2/4
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✓ Branch 3 taken 477 times.
 477 if (str_value.copy(str_arg, length_arg, from_cs, collation.collation,
3371 &errors)) {
3372 ✗ return true;
3373 }
3374
3375 477 fix_char_length(str_value.length());
3376 477 return false;
3377 }
3378
3379 /**
3380 @sa enum_query_type.
3381 For us to be able to print a query (in debugging, optimizer trace, EXPLAIN
3382 EXTENDED) without changing the query's result, this function must not
3383 modify the item's content. Not even a @c realloc() of @c str_value is
3384 permitted:
3385 @c Item_func_concat::val_str(), @c Item_func_repeat::val_str(),
3386 @c Item_func_encode::val_str() depend on the allocated length;
3387 a change of this length can influence results of CONCAT(), REPEAT(),
3388 ENCODE()...
3389 */
3390 1417231 void Item_string::print(const THD *, String *str,
3391 enum_query_type query_type) const {
3392
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 1417231 if (query_type & QT_NORMALIZED_FORMAT) {
3393
1/2
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 698 str->append("?");
3394 698 return;
3395 }
3396
3397 const bool print_introducer =
3398
2/2
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✓ Branch 1 taken 20815 times.
 2812251 (query_type & QT_FORCE_INTRODUCERS) ||
3399
4/4
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 1395718 (!(query_type & QT_WITHOUT_INTRODUCERS) && is_cs_specified());
3400
3401
2/2
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✓ Branch 1 taken 1395372 times.
 1416533 if (print_introducer) {
3402 21161 str->append('_');
3403
1/2
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✗ Branch 1 not taken.
 21161 str->append(collation.collation->csname);
3404 }
3405
3406 1416533 str->append('\'');
3407
3408
2/2
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✓ Branch 1 taken 1030049 times.
 1416533 if (query_type & QT_TO_SYSTEM_CHARSET) {
3409
2/2
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✓ Branch 1 taken 386319 times.
 386484 if (print_introducer) {
3410 /*
3411 Because we wrote an introducer, we must print str_value in its
3412 charset, and the resulting bytes must not be changed until they
3413 reach the end client.
3414 But the caller is asking for system_charset_info, and may later
3415 convert into character_set_results. That means two conversions: we
3416 must ensure that they don't change our printed bytes.
3417 So we print str_value in the least common denominator of the three
3418 charsets involved: ASCII. Non-ASCII characters are printed as \xFF
3419 sequences (which is ASCII too). This way, our bytes will not be
3420 changed.
3421 */
3422
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 165 ErrConvString tmp(str_value.ptr(), str_value.length(), &my_charset_bin);
3423
1/2
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 165 str->append(tmp.ptr());
3424 } else {
3425 // Convert to system charset.
3426 386319 convert_and_print(&str_value, str, system_charset_info);
3427 }
3428
2/2
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✓ Branch 1 taken 28086 times.
 1030049 } else if (query_type & QT_TO_ARGUMENT_CHARSET) {
3429
2/2
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✓ Branch 1 taken 1001834 times.
 1001963 if (print_introducer)
3430 129 convert_and_print(&str_value, str, collation.collation);
3431 else
3432 /*
3433 Convert the string literals to str->charset(),
3434 which is typically equal to charset_set_client.
3435 */
3436 1001834 convert_and_print(&str_value, str, str->charset());
3437 } else {
3438 // Caller wants a result in the charset of str_value.
3439 28086 str_value.print(str);
3440 }
3441
3442 1416533 str->append('\'');
3443 }
3444
3445 60629 double double_from_string_with_check(const CHARSET_INFO *cs, const char *cptr,
3446 const char *end) {
3447 int error;
3448 double tmp;
3449
3450 60629 const char *endptr = end;
3451
1/2
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✗ Branch 1 not taken.
 60629 tmp = my_strntod(cs, cptr, end - cptr, &endptr, &error);
3452
9/10
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 60629 if (error || (end != endptr && !check_if_only_end_space(cs, endptr, end))) {
3453
1/2
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✗ Branch 1 not taken.
 5477 ErrConvString err(cptr, end - cptr, cs);
3454 5477 push_warning_printf(
3455
2/4
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 5477 current_thd, Sql_condition::SL_WARNING, ER_TRUNCATED_WRONG_VALUE,
3456
2/4
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 5477 ER_THD(current_thd, ER_TRUNCATED_WRONG_VALUE), "DOUBLE", err.ptr());
3457 }
3458 60629 return tmp;
3459 }
3460
3461 21467 double Item_string::val_real() {
3462
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 21467 times.
 21467 assert(fixed == 1);
3463 21468 return double_from_string_with_check(str_value.charset(), str_value.ptr(),
3464 42934 str_value.ptr() + str_value.length());
3465 }
3466
3467 /**
3468 Converts a string to a longlong integer, with warnings.
3469
3470 @param cs charset of string
3471 @param cptr beginning of string
3472 @param end end of string
3473 @param unsigned_target If 0, caller will use result as a signed integer;
3474 if 1: an unsigned integer;
3475 if -1: caller doesn't tell. This influences warnings.
3476 */
3477 29391 longlong longlong_from_string_with_check(const CHARSET_INFO *cs,
3478 const char *cptr, const char *end,
3479 int unsigned_target) {
3480 int err;
3481 longlong tmp;
3482 29391 const char *endptr = end;
3483
3484
1/2
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✗ Branch 1 not taken.
 29391 tmp = (*(cs->cset->strtoll10))(cs, cptr, &endptr, &err);
3485
4/4
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✓ Branch 2 taken 559 times.
✓ Branch 3 taken 28832 times.
 58392 if (err > 0 || // range error, or
3486 // parse error not due to end spaces:
3487
5/6
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✗ Branch 3 not taken.
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✓ Branch 5 taken 4 times.
 29001 (end != endptr && !check_if_only_end_space(cs, endptr, end))) {
3488
1/2
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✗ Branch 1 not taken.
 559 ErrConvString errstr(cptr, end - cptr, cs);
3489
3490 559 push_warning_printf(
3491
2/4
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✗ Branch 3 not taken.
 559 current_thd, Sql_condition::SL_WARNING, ER_TRUNCATED_WRONG_VALUE,
3492
2/4
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✗ Branch 1 not taken.
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✗ Branch 3 not taken.
 559 ER_THD(current_thd, ER_TRUNCATED_WRONG_VALUE), "INTEGER", errstr.ptr());
3493 }
3494
4/4
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✓ Branch 1 taken 29292 times.
✓ Branch 2 taken 25 times.
✓ Branch 3 taken 74 times.
 29391 if (err < 0 && // string has a minus sign.
3495 unsigned_target == 1) // value will be used as unsigned.
3496
2/4
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 25 push_warning(current_thd, Sql_condition::SL_WARNING, ER_UNKNOWN_ERROR,
3497 "Cast to unsigned converted negative integer to its "
3498 "positive complement");
3499
4/4
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✓ Branch 3 taken 28888 times.
 29366 else if (err == 0 && // string had no minus sign
3500
2/2
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✓ Branch 1 taken 8 times.
 14 tmp < 0 && // the unsigned value is greater than max signed int
3501 unsigned_target == 0) // and will be used as signed.
3502 {
3503
2/4
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✗ Branch 3 not taken.
 6 push_warning(current_thd, Sql_condition::SL_WARNING, ER_UNKNOWN_ERROR,
3504 "Cast to signed converted positive out-of-range integer to "
3505 "its negative complement");
3506 }
3507 29391 return tmp;
3508 }
3509
3510 3575 longlong Item_string::val_int() {
3511
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 3575 times.
 3575 assert(fixed);
3512 3575 return longlong_from_string_with_check(str_value.charset(), str_value.ptr(),
3513 3575 str_value.ptr() + str_value.length(),
3514 3575 -1); // ignore sign issues
3515 }
3516
3517 254 my_decimal *Item_string::val_decimal(my_decimal *decimal_value) {
3518 254 return val_decimal_from_string(decimal_value);
3519 }
3520
3521 769 bool Item_null::eq(const Item *item, bool) const {
3522 769 return item->type() == type();
3523 }
3524
3525 572 double Item_null::val_real() {
3526 // following assert is redundant, because fixed=1 assigned in constructor
3527
1/2
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✓ Branch 1 taken 572 times.
 572 assert(fixed == 1);
3528 572 null_value = true;
3529 572 return 0.0;
3530 }
3531 6111692 longlong Item_null::val_int() {
3532 // following assert is redundant, because fixed=1 assigned in constructor
3533
1/2
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✓ Branch 1 taken 6111692 times.
 6111692 assert(fixed == 1);
3534 6111692 null_value = true;
3535 6111692 return 0;
3536 }
3537
3538 9556495 String *Item_null::val_str(String *) {
3539 // following assert is redundant, because fixed=1 assigned in constructor
3540
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 9556495 assert(fixed == 1);
3541 9556495 null_value = true;
3542 9556495 return nullptr;
3543 }
3544
3545 294 my_decimal *Item_null::val_decimal(my_decimal *) { return nullptr; }
3546
3547 ✗ bool Item_null::val_json(Json_wrapper *) {
3548 ✗ null_value = true;
3549 ✗ return false;
3550 }
3551
3552 32 Item *Item_null::safe_charset_converter(THD *, const CHARSET_INFO *tocs) {
3553 32 collation.set(tocs);
3554 32 return this;
3555 }
3556
3557 /*********************** Item_param related ******************************/
3558
3559 275249 Item_param::Item_param(const POS &pos, MEM_ROOT *root, uint pos_in_query_arg)
3560
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 275249 : super(pos), pos_in_query(pos_in_query_arg), m_clones(root) {
3561 275249 item_name.set("?");
3562 // Initial type is "invalid type", type will be assigned from context
3563 275249 set_nullable(true); // All parameters are nullable
3564 275249 }
3565
3566 275229 bool Item_param::itemize(Parse_context *pc, Item **res) {
3567
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 275229 if (skip_itemize(res)) return false;
3568
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 275229 if (super::itemize(pc, res)) return true;
3569
3570 /*
3571 see commentaries in PTI_limit_option_param_marker::itemize()
3572 */
3573
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 275229 assert(*res == this);
3574
3575 275229 LEX *lex = pc->thd->lex;
3576
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 275229 if (!lex->parsing_options.allows_variable) {
3577 1 my_error(ER_VIEW_SELECT_VARIABLE, MYF(0));
3578 1 return true;
3579 }
3580
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 275228 if (lex->reparse_common_table_expr_at) {
3581 /*
3582 This parameter is a clone, find the Item_param which corresponds to it
3583 in the original statement - its "master".
3584 Calculate the expected position of this master in the original
3585 statement:
3586 */
3587 8 uint master_pos = pos_in_query + lex->reparse_common_table_expr_at;
3588
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 8 List_iterator_fast<Item_param> it(lex->param_list);
3589 Item_param *master;
3590
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 8 while ((master = it++)) {
3591
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 8 if (master_pos == master->pos_in_query) {
3592 // Register it against its master
3593
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 8 return master->add_clone(this);
3594 }
3595 }
3596 ✗ assert(false); /* purecov: inspected */
3597 }
3598
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✓ Branch 1 taken 275182 times.
 275220 if (!lex->reparse_derived_table_params_at.empty()) {
3599 // This parameter is a clone, find the Item_param which corresponds
3600 // to it in the original statement - its "master".
3601
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 38 List_iterator_fast<Item_param> it(lex->param_list);
3602 Item_param *master;
3603 38 auto master_pos = lex->reparse_derived_table_params_at.begin();
3604
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 98 while ((master = it++)) {
3605
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 98 if (*master_pos == master->pos_in_query) {
3606
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 38 lex->reparse_derived_table_params_at.erase(master_pos);
3607 // Register it against its master
3608 38 pos_in_query = master->pos_in_query;
3609
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 38 return master->add_clone(this);
3610 }
3611 }
3612 ✗ assert(false);
3613 }
3614
3615 275182 return false;
3616 }
3617
3618 143283 bool Item_param::fix_fields(THD *, Item **) {
3619
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 143283 assert(!fixed);
3620
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 143283 if (param_state() == NO_VALUE) {
3621 // Parameter has no value, set data type from context
3622
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 140940 assert(data_type() == MYSQL_TYPE_INVALID);
3623 140940 fixed = true;
3624 140940 return false;
3625 }
3626
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✓ Branch 1 taken 2330 times.
 2343 if (param_state() == NULL_VALUE) {
3627 // Parameter data type may be ignored, keep existing type
3628 13 fixed = true;
3629 13 return false;
3630 }
3631 // Assign data type from actual data value, when given
3632
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 2330 switch (data_type_actual()) {
3633 975 case MYSQL_TYPE_LONGLONG:
3634 975 set_data_type_longlong();
3635 975 unsigned_flag = is_unsigned_actual();
3636 975 break;
3637 695 case MYSQL_TYPE_NEWDECIMAL:
3638 695 set_data_type_decimal(DECIMAL_MAX_PRECISION, DECIMAL_MAX_SCALE);
3639 695 break;
3640 369 case MYSQL_TYPE_DOUBLE:
3641 369 set_data_type_double();
3642 369 break;
3643 152 case MYSQL_TYPE_VARCHAR:
3644 // Set data type string with maximum possible size
3645 // @todo WL#6570 - what about blob values???
3646 152 set_data_type_string(65535U / m_collation_actual->mbmaxlen,
3647 m_collation_actual);
3648 152 break;
3649 5 case MYSQL_TYPE_DATE:
3650 5 set_data_type_date();
3651 5 break;
3652 8 case MYSQL_TYPE_TIME:
3653 8 set_data_type_time(DATETIME_MAX_DECIMALS);
3654 8 break;
3655 126 case MYSQL_TYPE_DATETIME:
3656 126 set_data_type_datetime(DATETIME_MAX_DECIMALS);
3657 126 break;
3658 ✗ default:
3659 ✗ assert(false);
3660 }
3661 // Do not set result type until having a valid type type (i.e. keep original)
3662
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 2330 if (data_type() != MYSQL_TYPE_INVALID)
3663 2330 m_result_type = type_to_result(data_type());
3664
3665 2330 fixed = true;
3666
3667 2330 return false;
3668 }
3669
3670 140949 bool Item_param::propagate_type(THD *, const Type_properties &type) {
3671
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 140949 assert(type.m_type != MYSQL_TYPE_INVALID);
3672
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 140949 switch (type.m_type) {
3673 4560 case MYSQL_TYPE_TINY:
3674 case MYSQL_TYPE_SHORT:
3675 case MYSQL_TYPE_INT24:
3676 case MYSQL_TYPE_LONG:
3677 case MYSQL_TYPE_LONGLONG:
3678 4560 set_data_type_longlong();
3679 4560 unsigned_flag = type.m_unsigned_flag;
3680 4560 break;
3681 1 case MYSQL_TYPE_BIT:
3682 1 set_data_type_bit();
3683 1 break;
3684 102 case MYSQL_TYPE_YEAR:
3685 102 set_data_type_year();
3686 102 break;
3687 247 case MYSQL_TYPE_NEWDECIMAL:
3688 case MYSQL_TYPE_DECIMAL:
3689 247 set_data_type_decimal(DECIMAL_MAX_PRECISION, DECIMAL_MAX_SCALE);
3690 247 break;
3691 131864 case MYSQL_TYPE_FLOAT:
3692 case MYSQL_TYPE_DOUBLE:
3693 131864 set_data_type_double();
3694 131864 break;
3695 2443 case MYSQL_TYPE_VARCHAR:
3696 case MYSQL_TYPE_VAR_STRING:
3697 case MYSQL_TYPE_STRING:
3698 case MYSQL_TYPE_ENUM:
3699 case MYSQL_TYPE_SET:
3700 // Parameter type is VARCHAR of largest possible size
3701 2443 set_data_type_string(65535U / type.m_collation.collation->mbmaxlen,
3702 2443 type.m_collation);
3703 2443 break;
3704 131 case MYSQL_TYPE_GEOMETRY:
3705 131 set_data_type_geometry();
3706 131 break;
3707 176 case MYSQL_TYPE_JSON:
3708 176 set_data_type_json();
3709 176 break;
3710 870 case MYSQL_TYPE_TINY_BLOB:
3711 case MYSQL_TYPE_MEDIUM_BLOB:
3712 case MYSQL_TYPE_LONG_BLOB:
3713 case MYSQL_TYPE_BLOB:
3714 // Parameter type is BLOB of largest possible size
3715 870 set_data_type_string(Field::MAX_LONG_BLOB_WIDTH, type.m_collation);
3716 870 break;
3717 285 case MYSQL_TYPE_DATETIME:
3718 case MYSQL_TYPE_DATETIME2:
3719 case MYSQL_TYPE_TIMESTAMP:
3720 case MYSQL_TYPE_TIMESTAMP2:
3721 285 set_data_type_datetime(6);
3722 285 break;
3723 138 case MYSQL_TYPE_DATE:
3724 case MYSQL_TYPE_NEWDATE:
3725 138 set_data_type_date();
3726 138 break;
3727 131 case MYSQL_TYPE_TIME:
3728 case MYSQL_TYPE_TIME2:
3729 131 set_data_type_time(6);
3730 131 break;
3731 1 case MYSQL_TYPE_NULL:
3732 1 set_data_type_string(65535U / type.m_collation.collation->mbmaxlen,
3733 1 type.m_collation);
3734 1 break;
3735 ✗ default:
3736 ✗ assert(false);
3737 }
3738
3739 140949 m_result_type = type_to_result(data_type());
3740
3741 140949 return false;
3742 }
3743
3744 435302 void Item_param::sync_clones() {
3745
2/2
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✓ Branch 1 taken 435297 times.
 435393 for (auto c : m_clones) {
3746 // Scalar-type members:
3747 92 c->set_nullable(is_nullable());
3748 92 c->null_value = null_value;
3749 92 c->max_length = max_length;
3750 92 c->decimals = decimals;
3751 92 c->unsigned_flag = unsigned_flag;
3752 92 c->m_param_state = m_param_state;
3753 92 c->m_result_type = m_result_type;
3754 92 c->value = value;
3755 92 c->m_data_type_source = m_data_type_source;
3756 92 c->m_data_type_actual = m_data_type_actual;
3757 92 c->m_unsigned_actual = m_unsigned_actual;
3758 92 c->m_collation_source = m_collation_source;
3759 92 c->m_collation_actual = m_collation_actual;
3760 // Class-type members:
3761 92 c->decimal_value = decimal_value;
3762 /*
3763 Note that String's assignment op properly sets m_is_alloced to 'false',
3764 which is correct here: c->str_value doesn't own anything.
3765 */
3766 92 c->str_value = str_value;
3767 92 c->str_value_ptr = str_value_ptr;
3768 91 c->collation = collation;
3769 }
3770 435297 }
3771
3772 1126 void Item_param::set_null() {
3773
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 1126 DBUG_TRACE;
3774
3775 1126 null_value = true;
3776
3777 1126 m_data_type_actual = MYSQL_TYPE_NULL;
3778 1126 m_param_state = NULL_VALUE;
3779 1126 }
3780
3781 8823 void Item_param::set_int(longlong i) {
3782
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 8823 DBUG_TRACE;
3783 8822 value.integer = i;
3784 8822 m_data_type_actual = MYSQL_TYPE_LONGLONG;
3785 8822 m_unsigned_actual = false;
3786 8822 m_param_state = INT_VALUE;
3787 8822 }
3788
3789 105 void Item_param::set_int(ulonglong i) {
3790
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 105 DBUG_TRACE;
3791 105 value.integer = i;
3792 105 m_data_type_actual = MYSQL_TYPE_LONGLONG;
3793 105 m_unsigned_actual = true;
3794 105 m_param_state = INT_VALUE;
3795 105 }
3796
3797 131964 void Item_param::set_double(double d) {
3798
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 131964 DBUG_TRACE;
3799 131964 value.real = d;
3800 131964 m_data_type_actual = MYSQL_TYPE_DOUBLE;
3801 131964 m_param_state = REAL_VALUE;
3802 131964 }
3803
3804 /**
3805 Set decimal parameter value from string.
3806
3807 @param str character string
3808 @param length string length
3809
3810 @note
3811 As we use character strings to send decimal values in
3812 binary protocol, we use str2my_decimal to convert it to
3813 internal decimal value.
3814 */
3815
3816 14 void Item_param::set_decimal(const char *str, ulong length) {
3817
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 14 DBUG_TRACE;
3818
3819 14 const char *end = str + length;
3820
1/2
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 14 str2my_decimal(E_DEC_FATAL_ERROR, str, &decimal_value, &end);
3821 14 m_data_type_actual = MYSQL_TYPE_NEWDECIMAL;
3822 14 m_param_state = DECIMAL_VALUE;
3823 14 }
3824
3825 20 void Item_param::set_decimal(const my_decimal *dv) {
3826 20 m_param_state = DECIMAL_VALUE;
3827 20 m_data_type_actual = MYSQL_TYPE_NEWDECIMAL;
3828
3829 20 my_decimal2decimal(dv, &decimal_value);
3830 20 }
3831
3832 /**
3833 Set parameter value from MYSQL_TIME value.
3834
3835 @param tm datetime value to set (time_type is ignored)
3836 @param time_type type of datetime value
3837
3838 @note
3839 If we value to be stored is not normalized, zero value will be stored
3840 instead and proper warning will be produced. This function relies on
3841 the fact that even wrong value sent over binary protocol fits into
3842 MAX_DATE_STRING_REP_LENGTH buffer.
3843 */
3844 221 void Item_param::set_time(MYSQL_TIME *tm, enum_mysql_timestamp_type time_type) {
3845
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 221 DBUG_TRACE;
3846
3847
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 221 assert(time_type == MYSQL_TIMESTAMP_DATE ||
3848 time_type == MYSQL_TIMESTAMP_TIME ||
3849 time_type == MYSQL_TIMESTAMP_DATETIME ||
3850 time_type == MYSQL_TIMESTAMP_DATETIME_TZ);
3851
3852 221 value.time = *tm;
3853 221 value.time.time_type = time_type;
3854
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 221 decimals = tm->second_part ? DATETIME_MAX_DECIMALS : 0;
3855
3856
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 221 if (check_datetime_range(value.time)) {
3857 /*
3858 TODO : Add error handling for Item_param::set_* functions.
3859 make_truncated_value_warning() can return error in STRICT mode.
3860 */
3861
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 12 (void)make_truncated_value_warning(current_thd, Sql_condition::SL_WARNING,
3862
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 12 ErrConvString(&value.time, decimals),
3863 time_type, NullS);
3864
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 12 set_zero_time(&value.time, MYSQL_TIMESTAMP_ERROR);
3865 }
3866
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 221 if (time_type == MYSQL_TIMESTAMP_DATE)
3867 55 m_data_type_actual = MYSQL_TYPE_DATE;
3868
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 166 else if (time_type == MYSQL_TIMESTAMP_TIME)
3869 42 m_data_type_actual = MYSQL_TYPE_TIME;
3870 else
3871 124 m_data_type_actual = MYSQL_TYPE_DATETIME;
3872
3873 221 m_param_state = TIME_VALUE;
3874 221 }
3875
3876 6395 bool Item_param::set_str(const char *str, size_t length) {
3877
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 6395 DBUG_TRACE;
3878 /*
3879 Assign string with no conversion: data is converted only after it's
3880 been written to the binary log.
3881 */
3882 uint dummy_errors;
3883
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 6396 if (str_value.copy(str, length, &my_charset_bin, &my_charset_bin,
3884 &dummy_errors))
3885 ✗ return true;
3886 6395 m_data_type_actual = MYSQL_TYPE_VARCHAR;
3887 /*
3888 Generally, the character set of the string stored in the parameter object
3889 is the resolved character set of the parameter, except:
3890 - when the resolved character set is a binary string, ensure the string
3891 is in the connection character set.
3892 - when the source string is a binary string, keep it as-is and perform
3893 no conversion.
3894 */
3895
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 12298 set_collation_actual(collation_source() == &my_charset_bin
3896 ? &my_charset_bin
3897 5903 : collation.collation != &my_charset_bin
3898
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 5903 ? collation.collation
3899
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 154 : current_thd->variables.collation_connection);
3900
3901 6396 m_param_state = STRING_VALUE;
3902 6396 return false;
3903 6396 }
3904
3905 596 bool Item_param::set_longdata(const char *str, ulong length) {
3906
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 596 DBUG_TRACE;
3907
3908 /*
3909 If client character set is multibyte, end of long data packet
3910 may hit at the middle of a multibyte character. Additionally,
3911 if binary log is open we must write long data value to the
3912 binary log in character set of client. This is why we can't
3913 convert long data to connection character set as it comes
3914 (here), and first have to concatenate all pieces together,
3915 write query to the binary log and only then perform conversion.
3916 */
3917
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 596 if (str_value.length() + length > current_thd->variables.max_allowed_packet) {
3918
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 4 my_message(ER_UNKNOWN_ERROR,
3919 "Parameter of prepared statement which is set through "
3920 "mysql_send_long_data() is longer than "
3921 "'max_allowed_packet' bytes",
3922 MYF(0));
3923 4 return true;
3924 }
3925
3926
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 592 if (str_value.append(str, length, &my_charset_bin)) return true;
3927
3928 /*
3929 Currently, both source type and actual type is MYSQL_TYPE_INVALID.
3930 They will be set to proper values by Prepared_statement::insert_params().
3931 */
3932 592 m_param_state = LONG_DATA_VALUE;
3933
3934 592 return false;
3935 596 }
3936
3937 /**
3938 Set parameter value from user variable value.
3939
3940 @param thd Current thread
3941 @param entry User variable structure (NULL means use NULL value)
3942
3943 @returns false if success, true if error
3944 */
3945
3946 14507 bool Item_param::set_from_user_var(THD *thd [[maybe_unused]],
3947 const user_var_entry *entry) {
3948
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 14507 DBUG_TRACE;
3949
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 14508 if (entry && entry->ptr()) {
3950 // An existing user variable that is not NULL
3951
3952 // Pinning of data types only implemented for integers
3953
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 13459 assert(!is_type_pinned() || result_type() == INT_RESULT);
3954
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 13459 if (is_type_pinned() && entry->type() != INT_RESULT) {
3955
1/2
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 5 my_error(ER_WRONG_ARGUMENTS, MYF(0), "EXECUTE");
3956 5 return true;
3957 }
3958
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 13454 switch (entry->type()) {
3959 651 case REAL_RESULT:
3960
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 651 set_double(*pointer_cast<const double *>(entry->ptr()));
3961 651 break;
3962 5802 case INT_RESULT:
3963
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✓ Branch 1 taken 5736 times.
 5802 if (entry->unsigned_flag) {
3964 66 ulonglong val = *pointer_cast<const ulonglong *>(entry->ptr());
3965
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 66 if (is_type_pinned() && !unsigned_flag && val > INT_MAX64) {
3966 ✗ my_error(ER_DATA_OUT_OF_RANGE, MYF(0), "signed integer", "EXECUTE");
3967 ✗ return true;
3968 }
3969
1/2
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 66 set_int(val);
3970 } else {
3971 5736 longlong val = *pointer_cast<const longlong *>(entry->ptr());
3972
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 5736 if (is_type_pinned() && unsigned_flag && val < 0) {
3973
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 3 my_error(ER_DATA_OUT_OF_RANGE, MYF(0), "unsigned integer",
3974 "EXECUTE");
3975 3 return true;
3976 }
3977
1/2
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 5733 set_int(val);
3978 }
3979 5800 break;
3980 5727 case STRING_RESULT:
3981
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 5727 if (set_str(entry->ptr(), entry->length())) return true;
3982 5728 break;
3983 1272 case DECIMAL_RESULT: {
3984 1272 const my_decimal *ent_value = (const my_decimal *)entry->ptr();
3985
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 1272 my_decimal2decimal(ent_value, &decimal_value);
3986 1272 m_data_type_actual = MYSQL_TYPE_NEWDECIMAL;
3987 1272 m_param_state = DECIMAL_VALUE;
3988 1272 break;
3989 }
3990 2 default:
3991 2 assert(0);
3992 set_null();
3993 }
3994 } else {
3995
1/2
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 1049 set_null();
3996 }
3997 14500 return false;
3998 14508 }
3999
4000 /**
4001 Resets parameter after execution.
4002
4003 @note
4004 We clear null_value here instead of setting it in set_* methods,
4005 because we want more easily handle case for long data.
4006 */
4007
4008 280852 void Item_param::reset() {
4009
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 280852 DBUG_TRACE;
4010 /* Shrink string buffer if it's bigger than max possible CHAR column */
4011
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 280858 if (str_value.alloced_length() > MAX_CHAR_WIDTH)
4012
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 20 str_value.mem_free();
4013 else
4014 280839 str_value.length(0);
4015 280860 str_value_ptr.length(0);
4016 280859 m_param_state = NO_VALUE;
4017 280859 m_data_type_actual = MYSQL_TYPE_INVALID;
4018 280859 null_value = false;
4019 280859 }
4020
4021 144024 type_conversion_status Item_param::save_in_field_inner(Field *field,
4022 bool no_conversions) {
4023
2/2
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 144024 if (param_state() == NULL_VALUE) {
4024 881 return set_field_to_null_with_conversions(field, no_conversions);
4025 }
4026 143145 field->set_notnull();
4027
4028
5/6
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 143145 switch (data_type_actual()) {
4029 6829 case MYSQL_TYPE_LONGLONG:
4030 6829 return field->store(value.integer, is_unsigned_actual());
4031 131949 case MYSQL_TYPE_DOUBLE:
4032 131949 return field->store(value.real);
4033 392 case MYSQL_TYPE_NEWDECIMAL:
4034 392 return field->store_decimal(&decimal_value);
4035 311 case MYSQL_TYPE_DATE:
4036 case MYSQL_TYPE_TIME:
4037 case MYSQL_TYPE_DATETIME:
4038 311 field->store_time(&value.time);
4039 311 return TYPE_OK;
4040 3664 case MYSQL_TYPE_VARCHAR:
4041 3664 return field->store(str_value.ptr(), str_value.length(),
4042 3663 str_value.charset());
4043 ✗ default:
4044 ✗ assert(0);
4045 }
4046 return TYPE_ERR_BAD_VALUE;
4047 }
4048
4049 50 bool Item_param::get_time(MYSQL_TIME *res) {
4050
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 50 switch (data_type_actual()) {
4051 36 case MYSQL_TYPE_TIME:
4052 case MYSQL_TYPE_DATE:
4053 case MYSQL_TYPE_DATETIME:
4054 36 *res = value.time;
4055 36 return false;
4056 1 case MYSQL_TYPE_LONGLONG:
4057 1 return get_time_from_int(res);
4058 1 case MYSQL_TYPE_DOUBLE:
4059 1 return get_time_from_real(res);
4060 1 case MYSQL_TYPE_NEWDECIMAL:
4061 1 return get_time_from_decimal(res);
4062 11 default:
4063 11 return get_time_from_string(res);
4064 }
4065 }
4066
4067 106 bool Item_param::get_date(MYSQL_TIME *res, my_time_flags_t fuzzydate) {
4068
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 106 switch (data_type_actual()) {
4069 77 case MYSQL_TYPE_TIME:
4070 case MYSQL_TYPE_DATE:
4071 case MYSQL_TYPE_DATETIME:
4072 77 *res = value.time;
4073 77 return false;
4074 2 case MYSQL_TYPE_LONGLONG:
4075 2 return get_date_from_int(res, fuzzydate);
4076 ✗ case MYSQL_TYPE_DOUBLE:
4077 ✗ return get_date_from_real(res, fuzzydate);
4078 ✗ case MYSQL_TYPE_NEWDECIMAL:
4079 ✗ return get_date_from_decimal(res, fuzzydate);
4080 27 default:
4081 27 return get_date_from_string(res, fuzzydate);
4082 }
4083 }
4084
4085 1304 double Item_param::val_real() {
4086
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 1304 assert(data_type() != MYSQL_TYPE_INVALID);
4087
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 1304 assert(param_state() != NO_VALUE);
4088
4089
2/2
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 1304 if (param_state() == NULL_VALUE) {
4090 16 return 0.0;
4091 }
4092
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 1288 switch (data_type_actual()) {
4093 598 case MYSQL_TYPE_DOUBLE:
4094 598 return value.real;
4095 300 case MYSQL_TYPE_LONGLONG:
4096
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 300 if (is_unsigned_actual())
4097 ✗ return static_cast<double>(static_cast<ulonglong>(value.integer));
4098 else
4099 300 return static_cast<double>(value.integer);
4100 377 case MYSQL_TYPE_NEWDECIMAL: {
4101 double result;
4102
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 377 my_decimal2double(E_DEC_FATAL_ERROR, &decimal_value, &result);
4103 377 return result;
4104 }
4105 10 case MYSQL_TYPE_VARCHAR: {
4106 10 return double_from_string_with_check(
4107 10 str_value.charset(), str_value.ptr(),
4108 20 str_value.ptr() + str_value.length());
4109 }
4110 3 case MYSQL_TYPE_DATE:
4111 case MYSQL_TYPE_TIME:
4112 case MYSQL_TYPE_DATETIME:
4113 /*
4114 This works for example when user says SELECT ?+0.0 and supplies
4115 time value for the placeholder.
4116 */
4117 3 return TIME_to_double(value.time);
4118 ✗ default:
4119 ✗ assert(0);
4120 }
4121 return 0.0;
4122 }
4123
4124 13875 longlong Item_param::val_int() {
4125
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 13875 assert(data_type() != MYSQL_TYPE_INVALID);
4126
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 13878 assert(param_state() != NO_VALUE);
4127
4128
2/2
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✓ Branch 1 taken 13743 times.
 13878 if (param_state() == NULL_VALUE) {
4129 135 return 0;
4130 }
4131
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 13743 switch (data_type_actual()) {
4132 ✗ case MYSQL_TYPE_DOUBLE:
4133 ✗ return static_cast<longlong>(rint(value.real));
4134 13650 case MYSQL_TYPE_LONGLONG:
4135 13650 return value.integer;
4136 4 case MYSQL_TYPE_NEWDECIMAL: {
4137 longlong i;
4138
1/2
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 4 my_decimal2int(E_DEC_FATAL_ERROR, &decimal_value, unsigned_flag, &i);
4139 4 return i;
4140 }
4141 86 case MYSQL_TYPE_VARCHAR: {
4142 86 return longlong_from_string_with_check(
4143 86 str_value.charset(), str_value.ptr(),
4144 172 str_value.ptr() + str_value.length(), unsigned_flag);
4145 }
4146 2 case MYSQL_TYPE_DATE:
4147 case MYSQL_TYPE_TIME:
4148 case MYSQL_TYPE_DATETIME:
4149
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 2 return (longlong)propagate_datetime_overflow(current_thd, [&](int *w) {
4150 2 return TIME_to_ulonglong_round(value.time, w);
4151 2 });
4152 ✗ default:
4153 ✗ assert(0);
4154 }
4155 return 0;
4156 }
4157
4158 1402 my_decimal *Item_param::val_decimal(my_decimal *dec) {
4159
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 1402 assert(data_type() != MYSQL_TYPE_INVALID);
4160
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 1402 assert(param_state() != NO_VALUE);
4161
4162
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 1402 if (param_state() == NULL_VALUE) {
4163 3 return nullptr;
4164 }
4165
4/6
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 1399 switch (data_type_actual()) {
4166 1179 case MYSQL_TYPE_NEWDECIMAL:
4167 1179 return &decimal_value;
4168 ✗ case MYSQL_TYPE_DOUBLE:
4169 ✗ double2my_decimal(E_DEC_FATAL_ERROR, value.real, dec);
4170 ✗ return dec;
4171 217 case MYSQL_TYPE_LONGLONG:
4172 217 int2my_decimal(E_DEC_FATAL_ERROR, value.integer, is_unsigned_actual(),
4173 dec);
4174 217 return dec;
4175 1 case MYSQL_TYPE_VARCHAR:
4176 1 return val_decimal_from_string(dec);
4177 2 case MYSQL_TYPE_DATE:
4178 case MYSQL_TYPE_TIME:
4179 case MYSQL_TYPE_DATETIME:
4180 2 return date2my_decimal(&value.time, dec);
4181 ✗ default:
4182 ✗ assert(0);
4183 }
4184 return nullptr;
4185 }
4186
4187 3491 String *Item_param::val_str(String *str) {
4188
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 3491 assert(data_type() != MYSQL_TYPE_INVALID);
4189
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 3491 assert(param_state() != NO_VALUE);
4190
4191
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✓ Branch 1 taken 3326 times.
 3491 if (param_state() == NULL_VALUE) {
4192 165 return nullptr;
4193 }
4194
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 3326 switch (data_type_actual()) {
4195 3187 case MYSQL_TYPE_VARCHAR:
4196 3187 return &str_value_ptr;
4197 ✗ case MYSQL_TYPE_DOUBLE:
4198 ✗ str->set_real(value.real, DECIMAL_NOT_SPECIFIED, &my_charset_bin);
4199 ✗ return str;
4200 69 case MYSQL_TYPE_LONGLONG:
4201 69 str->set_int(value.integer, is_unsigned_actual(), &my_charset_bin);
4202 69 return str;
4203 24 case MYSQL_TYPE_NEWDECIMAL:
4204
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 24 if (my_decimal2string(E_DEC_FATAL_ERROR, &decimal_value, str) <= 1)
4205 24 return str;
4206 ✗ return nullptr;
4207 46 case MYSQL_TYPE_DATE:
4208 case MYSQL_TYPE_TIME:
4209 case MYSQL_TYPE_DATETIME: {
4210
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 46 if (str->reserve(MAX_DATE_STRING_REP_LENGTH)) break;
4211
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 46 str->length(my_TIME_to_str(value.time, str->ptr(),
4212 46 min(decimals, uint8{DATETIME_MAX_DECIMALS})));
4213 46 str->set_charset(&my_charset_bin);
4214 46 return str;
4215 }
4216 ✗ default:
4217 ✗ assert(0);
4218 }
4219 ✗ return str;
4220 }
4221
4222 116 bool Item_param::val_json(Json_wrapper *wr) {
4223
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✓ Branch 1 taken 116 times.
 116 assert(fixed);
4224
1/2
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 116 assert(data_type() != MYSQL_TYPE_INVALID);
4225
1/2
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 116 assert(param_state() != NO_VALUE);
4226
4227 116 String value;
4228 116 String tmp;
4229 232 return sql_scalar_to_json(this, "cast_as_json", &value, &tmp, wr, nullptr,
4230
1/2
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✗ Branch 1 not taken.
 232 m_json_as_scalar);
4231 116 }
4232
4233 2344 void Item_param::copy_param_actual_type(Item_param *from) {
4234 2344 set_data_type_source(from->data_type_source(), from->is_unsigned_actual());
4235 2344 set_data_type_actual(from->data_type_actual(), from->is_unsigned_actual());
4236 2344 m_collation_source = from->m_collation_source;
4237 2344 m_collation_actual = from->m_collation_actual;
4238 2344 m_param_state = from->m_param_state;
4239 /*
4240 In a repreparation, steps are:
4241 - parse, create new Item_param
4242 - copy_param_actual_type (sets m_param_state from old param, that makes it
4243 look like it has a value)
4244 - prepare_query()
4245 - swap_parameter_array() (sets value from old param).
4246 So, here the new Item_param is in a split-brain state.
4247 Thus in prepare_query() the optimizer tracing will try to print its value;
4248 so the not-yet-final value has to be reasonable; if we leave it random here
4249 we can crash (if using DECIMAL) (see query_val_str()).
4250 We do not copy any pointer-to-data (e.g. str_value), to have no problems
4251 with memory ownership.
4252 */
4253 2344 value = from->value;
4254
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 2344 switch (m_param_state) {
4255 556 case DECIMAL_VALUE:
4256 // Propagate decimals' layout, and set number to zero
4257 556 decimal_value.intg = from->decimal_value.intg;
4258 556 decimal_value.frac = from->decimal_value.frac;
4259 556 memset(decimal_value.buf, 0, DECIMAL_BUFF_LENGTH);
4260 556 decimal_value.sign(from->decimal_value.sign());
4261 556 break;
4262 // STRING_VALUE: str_value member was initialized by ctor already.
4263 1788 default:
4264 1788 break;
4265 }
4266 2344 }
4267
4268 /**
4269 Return Param item values in string format, for generating the dynamic
4270 query used in update/binary logs.
4271
4272 @param thd current thread
4273 @param[out] str String to fill with parameter
4274
4275 @returns supplied string on success, NULL on error
4276
4277 @todo
4278 - Change interface and implementation to fill log data in place
4279 and avoid one more memcpy/alloc between str and log string.
4280 - In case of error we need to notify replication
4281 that binary log contains wrong statement
4282 */
4283
4284 150298 const String *Item_param::query_val_str(const THD *thd, String *str) const {
4285
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 150298 switch (m_param_state) {
4286 9005 case INT_VALUE:
4287 9005 str->set_int(value.integer, is_unsigned_actual(), &my_charset_bin);
4288 9004 break;
4289 132099 case REAL_VALUE:
4290 132099 str->set_real(value.real, DECIMAL_NOT_SPECIFIED, &my_charset_bin);
4291 132099 break;
4292 1371 case DECIMAL_VALUE:
4293
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 1371 if (my_decimal2string(E_DEC_FATAL_ERROR, &decimal_value, str) > 1)
4294 ✗ return &my_null_string;
4295 1371 break;
4296 221 case TIME_VALUE: {
4297 char *buf, *ptr;
4298 221 str->length(0);
4299 /*
4300 TODO: in case of error we need to notify replication
4301 that binary log contains wrong statement
4302 */
4303
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 221 if (str->reserve(MAX_DATE_STRING_REP_LENGTH + 3)) break;
4304
4305 /* Create date string inplace */
4306 221 buf = str->c_ptr_quick();
4307 221 ptr = buf;
4308 221 *ptr++ = '\'';
4309 442 ptr += my_TIME_to_str(value.time, ptr,
4310
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 221 min(decimals, uint8{DATETIME_MAX_DECIMALS}));
4311 221 *ptr++ = '\'';
4312 221 str->length((uint32)(ptr - buf));
4313 221 break;
4314 }
4315 6473 case STRING_VALUE:
4316 case LONG_DATA_VALUE: {
4317 6473 str->length(0);
4318
1/2
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✓ Branch 1 taken 6474 times.
 6473 if (append_query_string(thd, thd->variables.character_set_client,
4319 &str_value, str))
4320 ✗ return nullptr;
4321 6474 break;
4322 }
4323 1129 case NULL_VALUE:
4324 1129 return &my_null_string;
4325 ✗ default:
4326 ✗ assert(0);
4327 }
4328 149169 return str;
4329 }
4330
4331 /**
4332 Convert value according to the following rules:
4333 - Convert string from client character set to the character set of
4334 connection.
4335 - Invalid character set conversions cause an error.
4336 - If resolved type is a temporal value, attempt to interpret string
4337 or numeric value as temporal value and set actual type accordingly.
4338 - Invalid conversions to temporal values are currently ignored and
4339 will cause neither errors nor warnings, and actual type is left
4340 unchanged. It is expected that later processing will issue error
4341 or warning as appropriate.
4342
4343 @returns false if success, true if error
4344 */
4345
4346 149755 bool Item_param::convert_value() {
4347
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 149755 switch (data_type_actual()) {
4348 8825 case MYSQL_TYPE_LONGLONG:
4349 /*
4350 If a temporal value is expected and the provided integer value can
4351 be converted to one, change the actual value accordingly.
4352 */
4353
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 17637 if (data_type() == MYSQL_TYPE_DATE ||
4354 8812 data_type() == MYSQL_TYPE_DATETIME) {
4355 38 int status = 0;
4356 MYSQL_TIME t;
4357
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 38 if (number_to_datetime(value.integer, &t, TIME_FUZZY_DATE, &status) ==
4358
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 44 -1LL ||
4359
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 6 status != 0) {
4360 32 break;
4361 }
4362 6 value.time = t;
4363
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 6 if (value.time.time_type == MYSQL_TIMESTAMP_DATE) {
4364 4 set_data_type_actual(MYSQL_TYPE_DATE);
4365
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✗ Branch 1 not taken.
 2 } else if (value.time.time_type == MYSQL_TIMESTAMP_DATETIME) {
4366 2 set_data_type_actual(MYSQL_TYPE_DATETIME);
4367 ✗ } else if (value.time.time_type == MYSQL_TIMESTAMP_DATETIME_TZ) {
4368 ✗ if (convert_time_zone_displacement(current_thd->time_zone(),
4369 &value.time))
4370 6 return true;
4371 ✗ set_data_type_actual(MYSQL_TYPE_DATETIME);
4372 } else {
4373 // We only expect DATE and DATETIME values, not TIME.
4374 ✗ assert(value.time.time_type == MYSQL_TIMESTAMP_DATE ||
4375 value.time.time_type == MYSQL_TIMESTAMP_DATETIME);
4376 }
4377 6 return false;
4378
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 8787 } else if (data_type() == MYSQL_TYPE_TIME) {
4379 14 int status = 0;
4380 MYSQL_TIME t;
4381
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 14 if (number_to_time(value.integer, &t, &status) || status != 0) {
4382 10 break;
4383 }
4384 3 value.time = t;
4385
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 3 if (value.time.time_type == MYSQL_TIMESTAMP_TIME) {
4386 2 set_data_type_actual(MYSQL_TYPE_TIME);
4387
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 1 } else if (value.time.time_type == MYSQL_TIMESTAMP_DATETIME) {
4388 1 set_data_type_actual(MYSQL_TYPE_DATETIME);
4389 } else {
4390 // We only expect TIME and DATETIME values, not DATE.
4391 ✗ assert(value.time.time_type == MYSQL_TIMESTAMP_TIME ||
4392 value.time.time_type == MYSQL_TIMESTAMP_DATETIME);
4393 }
4394 3 return false;
4395 }
4396 8771 break;
4397
4398 1286 case MYSQL_TYPE_NEWDECIMAL:
4399 /*
4400 If a temporal value is expected and the provided decimal value can
4401 be converted to one, change the actual value accordingly.
4402 */
4403
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 2569 if (data_type() == MYSQL_TYPE_DATE ||
4404 1283 data_type() == MYSQL_TYPE_DATETIME) {
4405 MYSQL_TIME t;
4406
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 8 if (decimal_to_datetime(&decimal_value, &t, TIME_FUZZY_DATE)) {
4407 ✗ break;
4408 }
4409 8 value.time = t;
4410
2/2
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 8 if (value.time.time_type == MYSQL_TIMESTAMP_DATE) {
4411 4 set_data_type_actual(MYSQL_TYPE_DATE);
4412
1/2
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✗ Branch 1 not taken.
 4 } else if (value.time.time_type == MYSQL_TIMESTAMP_DATETIME) {
4413 4 set_data_type_actual(MYSQL_TYPE_DATETIME);
4414 ✗ } else if (value.time.time_type == MYSQL_TIMESTAMP_DATETIME_TZ) {
4415 ✗ if (convert_time_zone_displacement(current_thd->time_zone(),
4416 &value.time))
4417 8 return true;
4418 ✗ set_data_type_actual(MYSQL_TYPE_DATETIME);
4419 } else {
4420 // We only expect DATE and DATETIME values, not TIME.
4421 ✗ assert(value.time.time_type == MYSQL_TIMESTAMP_DATE ||
4422 value.time.time_type == MYSQL_TIMESTAMP_DATETIME);
4423 }
4424 8 return false;
4425
2/2
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 1278 } else if (data_type() == MYSQL_TYPE_TIME) {
4426 MYSQL_TIME t;
4427
3/4
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 4 if (decimal_to_time(&decimal_value, &t)) {
4428 1 break;
4429 }
4430 3 value.time = t;
4431
2/2
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 3 if (value.time.time_type == MYSQL_TIMESTAMP_TIME) {
4432 2 set_data_type_actual(MYSQL_TYPE_TIME);
4433
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 1 } else if (value.time.time_type == MYSQL_TIMESTAMP_DATETIME) {
4434 1 set_data_type_actual(MYSQL_TYPE_DATETIME);
4435 } else {
4436 // We only expect TIME and DATETIME values, not DATE.
4437 ✗ assert(value.time.time_type == MYSQL_TIMESTAMP_TIME ||
4438 value.time.time_type == MYSQL_TIMESTAMP_DATETIME);
4439 }
4440 3 return false;
4441 }
4442 1274 break;
4443
4444 131940 case MYSQL_TYPE_DOUBLE:
4445 /*
4446 If a temporal value is expected and the provided float value can
4447 be converted to one, change the actual value accordingly.
4448 */
4449
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 263868 if (data_type() == MYSQL_TYPE_DATE ||
4450 131928 data_type() == MYSQL_TYPE_DATETIME) {
4451 MYSQL_TIME t;
4452
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 37 if (double_to_datetime(value.real, &t, TIME_FUZZY_DATE)) {
4453 ✗ break;
4454 }
4455 37 value.time = t;
4456
2/2
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✓ Branch 1 taken 33 times.
 37 if (value.time.time_type == MYSQL_TIMESTAMP_DATE) {
4457 4 set_data_type_actual(MYSQL_TYPE_DATE);
4458
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✗ Branch 1 not taken.
 33 } else if (value.time.time_type == MYSQL_TIMESTAMP_DATETIME) {
4459 33 set_data_type_actual(MYSQL_TYPE_DATETIME);
4460 ✗ } else if (value.time.time_type == MYSQL_TIMESTAMP_DATETIME_TZ) {
4461 ✗ if (convert_time_zone_displacement(current_thd->time_zone(),
4462 &value.time))
4463 37 return true;
4464 ✗ set_data_type_actual(MYSQL_TYPE_DATETIME);
4465 } else {
4466 // We only expect DATE and DATETIME values, not TIME.
4467 ✗ assert(value.time.time_type == MYSQL_TIMESTAMP_DATE ||
4468 value.time.time_type == MYSQL_TIMESTAMP_DATETIME);
4469 }
4470 37 return false;
4471
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 131903 } else if (data_type() == MYSQL_TYPE_TIME) {
4472 MYSQL_TIME t;
4473
3/4
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 13 if (double_to_time(value.real, &t)) {
4474 10 break;
4475 }
4476 3 value.time = t;
4477
2/2
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 3 if (value.time.time_type == MYSQL_TIMESTAMP_TIME) {
4478 2 set_data_type_actual(MYSQL_TYPE_TIME);
4479
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 1 } else if (value.time.time_type == MYSQL_TIMESTAMP_DATETIME) {
4480 1 set_data_type_actual(MYSQL_TYPE_DATETIME);
4481 } else {
4482 // We only expect TIME and DATETIME values, not DATE.
4483 ✗ assert(value.time.time_type == MYSQL_TIMESTAMP_TIME ||
4484 value.time.time_type == MYSQL_TIMESTAMP_DATETIME);
4485 }
4486 3 return false;
4487 }
4488 131890 break;
4489
4490 221 case MYSQL_TYPE_DATE:
4491 case MYSQL_TYPE_TIME:
4492 case MYSQL_TYPE_DATETIME:
4493 221 break;
4494
4495 6358 case MYSQL_TYPE_VARCHAR:
4496
2/2
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 6358 if (is_string_type(data_type())) {
4497 size_t dummy;
4498
3/4
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✓ Branch 3 taken 4526 times.
 4745 if (String::needs_conversion(0, m_collation_source, m_collation_actual,
4499 &dummy)) {
4500 uint errors;
4501 219 StringBuffer<STRING_BUFFER_USUAL_SIZE> convert_buffer;
4502
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 219 if (convert_buffer.copy(str_value.ptr(), str_value.length(),
4503 m_collation_source, m_collation_actual,
4504 &errors))
4505 ✗ return true;
4506
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 219 times.
 219 if (errors > 0) {
4507 ✗ my_error(ER_IMPOSSIBLE_STRING_CONVERSION, MYF(0),
4508 ✗ m_collation_source->m_coll_name,
4509 ✗ m_collation_actual->m_coll_name, "parameter");
4510 ✗ return true;
4511 }
4512
2/4
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 219 if (str_value.copy(convert_buffer)) return true;
4513
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✗ Branch 1 not taken.
 219 } else {
4514 4526 str_value.set_charset(m_collation_actual);
4515 }
4516
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✓ Branch 1 taken 276 times.
 1614 } else if (is_numeric_type(data_type())) {
4517 1338 const char *ptr = str_value.ptr();
4518 1338 size_t length = str_value.length();
4519 1338 const CHARSET_INFO *cs = m_collation_source;
4520 int error;
4521 const char *endptr;
4522 1338 bool check_integer = is_integer_type(data_type());
4523
2/2
✓ Branch 0 taken 609 times.
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 1338 if (check_integer) {
4524 // First, check if string is a signed or unsigned integer
4525 609 endptr = ptr + length;
4526
1/2
✓ Branch 0 taken 609 times.
✗ Branch 1 not taken.
 609 value.integer = (*(cs->cset->strtoll10))(cs, ptr, &endptr, &error);
4527
4/4
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 771 if (length == static_cast<size_t>(endptr - ptr) ||
4528
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 162 check_if_only_end_space(cs, endptr, ptr + length)) {
4529
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✓ Branch 5 taken 56 times.
 449 if (!unsigned_flag && error <= 0 && value.integer >= 0) {
4530 303 set_data_type_actual(MYSQL_TYPE_LONGLONG, false);
4531 1184 return false;
4532
4/4
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✓ Branch 3 taken 40 times.
 146 } else if (unsigned_flag && error == 0) {
4533 48 set_data_type_actual(MYSQL_TYPE_LONGLONG, true);
4534 48 return false;
4535 }
4536 }
4537 }
4538 // Next, check if it is a decimal
4539
6/6
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 987 if (check_integer || data_type() == MYSQL_TYPE_NEWDECIMAL) {
4540
3/4
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✓ Branch 3 taken 134 times.
 538 if (str2my_decimal(E_DEC_ERROR, ptr, length, cs, &decimal_value) ==
4541 E_DEC_OK) {
4542 404 set_data_type_actual(MYSQL_TYPE_NEWDECIMAL);
4543 404 return false;
4544 }
4545 }
4546 // Finally, check if it is a valid floating point value
4547
1/2
✓ Branch 0 taken 583 times.
✗ Branch 1 not taken.
 583 value.real = my_strntod(cs, ptr, length, &endptr, &error);
4548 1749 if (error == 0 &&
4549
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 1021 endptr - ptr > 0 && // my_strntod() accepts empty string as 0.0e0
4550
2/2
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 438 (length == static_cast<size_t>(endptr - ptr) ||
4551
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 11 check_if_only_end_space(cs, endptr, ptr + length))) {
4552 429 set_data_type_actual(MYSQL_TYPE_DOUBLE);
4553 429 return false;
4554 }
4555
6/6
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 497 } else if (data_type() == MYSQL_TYPE_DATE ||
4556 221 data_type() == MYSQL_TYPE_DATETIME) {
4557 182 str_value.set_charset(m_collation_source);
4558 182 MYSQL_TIME_STATUS status;
4559
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 182 if (str_to_datetime(&str_value, &value.time, TIME_FUZZY_DATE,
4560
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✓ Branch 3 taken 29 times.
 335 &status) ||
4561
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 153 status.warnings != 0) {
4562 // Nothing
4563 } else {
4564
2/2
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✓ Branch 1 taken 138 times.
 153 if (value.time.time_type == MYSQL_TIMESTAMP_DATE) {
4565 15 set_data_type_actual(MYSQL_TYPE_DATE);
4566
2/2
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✓ Branch 1 taken 4 times.
 138 } else if (value.time.time_type == MYSQL_TIMESTAMP_DATETIME) {
4567 134 set_data_type_actual(MYSQL_TYPE_DATETIME);
4568
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 4 } else if (value.time.time_type == MYSQL_TIMESTAMP_DATETIME_TZ) {
4569
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 4 if (convert_time_zone_displacement(current_thd->time_zone(),
4570 &value.time))
4571 153 return true;
4572 4 set_data_type_actual(MYSQL_TYPE_DATETIME);
4573 } else {
4574 // We only expect DATE and DATETIME values, not TIME.
4575 ✗ assert(value.time.time_type == MYSQL_TIMESTAMP_DATE ||
4576 value.time.time_type == MYSQL_TIMESTAMP_DATETIME ||
4577 value.time.time_type == MYSQL_TIMESTAMP_DATETIME_TZ);
4578 }
4579 153 return false;
4580 }
4581
2/2
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✓ Branch 1 taken 39 times.
 94 } else if (data_type() == MYSQL_TYPE_TIME) {
4582 55 str_value.set_charset(m_collation_source);
4583 55 MYSQL_TIME_STATUS status;
4584
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 107 if (str_to_time(&str_value, &value.time, 0, &status) ||
4585
2/2
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✓ Branch 1 taken 50 times.
 52 status.warnings != 0) {
4586 } else {
4587
2/2
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 50 if (value.time.time_type == MYSQL_TIMESTAMP_TIME) {
4588 9 set_data_type_actual(MYSQL_TYPE_TIME);
4589
2/2
✓ Branch 0 taken 39 times.
✓ Branch 1 taken 2 times.
 41 } else if (value.time.time_type == MYSQL_TIMESTAMP_DATETIME) {
4590 39 set_data_type_actual(MYSQL_TYPE_DATETIME);
4591
1/2
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 2 } else if (value.time.time_type == MYSQL_TIMESTAMP_DATETIME_TZ) {
4592
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✓ Branch 5 taken 2 times.
 2 if (convert_time_zone_displacement(current_thd->time_zone(),
4593 &value.time))
4594 50 return true;
4595 2 set_data_type_actual(MYSQL_TYPE_DATETIME);
4596 } else {
4597 // We only expect TIME and DATETIME values, not DATE.
4598 ✗ assert(value.time.time_type == MYSQL_TIMESTAMP_TIME ||
4599 value.time.time_type == MYSQL_TIMESTAMP_DATETIME ||
4600 value.time.time_type == MYSQL_TIMESTAMP_DATETIME_TZ);
4601 }
4602 50 return false;
4603 }
4604 }
4605 /*
4606 str_value_ptr is returned from val_str(). It must not be allocated
4607 to prevent it's modification by val_str() invoker.
4608 */
4609 4970 str_value_ptr.set(str_value.ptr(), str_value.length(),
4610 str_value.charset());
4611 4972 break;
4612
4613 1126 case MYSQL_TYPE_NULL:
4614 1126 break;
4615 ✗ default:
4616 ✗ assert(false);
4617 }
4618 148307 return false;
4619 }
4620
4621 ✗ Item *Item_param::clone_item() const {
4622 /* see comments in the header file */
4623 ✗ switch (m_param_state) {
4624 ✗ case NULL_VALUE:
4625 ✗ return new Item_null(item_name);
4626 ✗ case INT_VALUE:
4627 ✗ return (is_unsigned_actual()
4628 ✗ ? new Item_uint(item_name, value.integer, max_length)
4629 ✗ : new Item_int(item_name, value.integer, max_length));
4630 ✗ case REAL_VALUE:
4631 ✗ return new Item_float(item_name, value.real, decimals, max_length);
4632 ✗ case STRING_VALUE:
4633 case LONG_DATA_VALUE:
4634 ✗ return new Item_string(item_name, str_value.ptr(), str_value.length(),
4635 ✗ str_value.charset());
4636 ✗ case TIME_VALUE:
4637 ✗ break;
4638 ✗ case NO_VALUE:
4639 default:
4640 ✗ assert(0);
4641 };
4642 ✗ return nullptr;
4643 }
4644
4645 906 bool Item_param::eq(const Item *arg, bool) const { return this == arg; }
4646
4647 /* End of Item_param related */
4648
4649 2264 void Item_param::print(const THD *thd, String *str,
4650 enum_query_type query_type) const {
4651
2/2
✓ Branch 0 taken 547 times.
✓ Branch 1 taken 1717 times.
 2264 if (m_param_state == NO_VALUE ||
4652
2/2
✓ Branch 0 taken 5 times.
✓ Branch 1 taken 542 times.
 547 query_type & (QT_NORMALIZED_FORMAT | QT_NO_DATA_EXPANSION)) {
4653 1722 str->append('?');
4654 } else {
4655 char buffer[STRING_BUFFER_USUAL_SIZE];
4656 542 String tmp(buffer, sizeof(buffer), &my_charset_bin);
4657
1/2
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✗ Branch 1 not taken.
 542 const String *res = query_val_str(thd, &tmp);
4658
2/4
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✓ Branch 2 taken 542 times.
✗ Branch 3 not taken.
 542 if (res != nullptr) str->append(*res);
4659 542 }
4660 2264 }
4661
4662 /**
4663 Preserve the original parameter types and values
4664 when re-preparing a prepared statement.
4665
4666 @details Copy parameter type information and conversion
4667 function pointers from a parameter of the old statement
4668 to the corresponding parameter of the new one.
4669
4670 Move parameter values from the old parameters to the new
4671 one. We simply "exchange" the values, which allows
4672 to save on allocation and character set conversion in
4673 case a parameter is a string or a blob/clob.
4674
4675 The old parameter gets the value of this one, which
4676 ensures that all memory of this parameter is freed
4677 correctly.
4678
4679 @param[in] src parameter item of the original
4680 prepared statement
4681 */
4682
4683 2343 void Item_param::set_param_type_and_swap_value(Item_param *src) {
4684 2343 m_data_type_source = src->m_data_type_source;
4685 2343 m_data_type_actual = src->m_data_type_actual;
4686 2343 m_unsigned_actual = src->m_unsigned_actual;
4687 2343 m_collation_source = src->m_collation_source;
4688 2343 m_collation_actual = src->m_collation_actual;
4689
4690 2343 null_value = src->null_value;
4691
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2343 times.
 2343 assert(m_param_state == src->m_param_state);
4692 2343 value = src->value;
4693
4694 2343 decimal_value.swap(src->decimal_value);
4695 2343 str_value.swap(src->str_value);
4696 2343 str_value_ptr.swap(src->str_value_ptr);
4697 2343 }
4698
4699 /**
4700 This operation is intended to store some item value in Item_param to be
4701 used later.
4702
4703 @param it a pointer to an item in the tree
4704
4705 @return Error status
4706 @retval true on error
4707 @retval false on success
4708 */
4709
4710 226 bool Item_param::set_value(THD *, sp_rcontext *, Item **it) {
4711 226 Item *arg = *it;
4712
4713
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 226 times.
 226 if (arg->is_null()) {
4714 ✗ set_null();
4715 ✗ return false;
4716 }
4717
4718 226 null_value = false;
4719
4720
4/5
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 226 switch (arg->result_type()) {
4721 79 case STRING_RESULT: {
4722 char str_buffer[STRING_BUFFER_USUAL_SIZE];
4723 79 String sv_buffer(str_buffer, sizeof(str_buffer), &my_charset_bin);
4724
1/2
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 79 String *sv = arg->val_str(&sv_buffer);
4725
4726
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 79 if (!sv) return true;
4727
4728
2/4
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 79 set_str(sv->c_ptr_safe(), sv->length());
4729
1/2
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✗ Branch 1 not taken.
 79 str_value_ptr.set(str_value.ptr(), str_value.length(),
4730 str_value.charset());
4731 79 collation.set(str_value.charset(), DERIVATION_COERCIBLE);
4732 79 break;
4733
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 79 times.
 79 }
4734
4735 24 case REAL_RESULT:
4736 24 set_double(arg->val_real());
4737 24 break;
4738
4739 103 case INT_RESULT:
4740 103 set_int(arg->val_int());
4741 103 break;
4742
4743 20 case DECIMAL_RESULT: {
4744 20 my_decimal dv_buf;
4745
1/2
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✗ Branch 1 not taken.
 20 my_decimal *dv = arg->val_decimal(&dv_buf);
4746
4747
1/2
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 20 if (!dv) return true;
4748
4749
1/2
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 20 set_decimal(dv);
4750 20 break;
4751
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 20 }
4752
4753 ✗ default:
4754 /* That can not happen. */
4755
4756 ✗ assert(false); // Abort in debug mode.
4757
4758 set_null(); // Set to NULL in release mode.
4759 return false;
4760 }
4761
4762 226 return false;
4763 }
4764
4765 /**
4766 Setter of Item_param::m_out_param_info.
4767
4768 m_out_param_info is used to store information about store routine
4769 OUT-parameters, such as stored routine name, database, stored routine
4770 variable name. It is supposed to be set in sp_head::execute() after
4771 Item_param::set_value() is called.
4772 */
4773
4774 226 void Item_param::set_out_param_info(Send_field *info) {
4775 226 m_out_param_info = info;
4776 /*
4777 Here we set data type for an already fixed Item object.
4778 It should rather be set when resolving the CALL statement.
4779 */
4780 226 set_data_type(m_out_param_info->type);
4781 226 m_result_type = Field::result_merge_type(data_type());
4782 226 }
4783
4784 /**
4785 Getter of Item_param::m_out_param_info.
4786
4787 m_out_param_info is used to store information about store routine
4788 OUT-parameters, such as stored routine name, database, stored routine
4789 variable name. It is supposed to be retrieved in
4790 Protocol::send_parameters() during creation of OUT-parameter result set.
4791 */
4792
4793 258 const Send_field *Item_param::get_out_param_info() const {
4794 258 return m_out_param_info;
4795 }
4796
4797 /**
4798 Fill meta-data information for the corresponding column in a result set.
4799 If this is an OUT-parameter of a stored procedure, preserve meta-data of
4800 stored-routine variable.
4801
4802 @param field container for meta-data to be filled
4803 */
4804
4805 134672 void Item_param::make_field(Send_field *field) {
4806 134672 Item::make_field(field);
4807
4808
2/2
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✓ Branch 1 taken 165 times.
 134672 if (!m_out_param_info) return;
4809
4810 /*
4811 This is an OUT-parameter of stored procedure. We should use
4812 OUT-parameter info to fill out the names.
4813 */
4814
4815 165 field->db_name = m_out_param_info->db_name;
4816 165 field->table_name = m_out_param_info->table_name;
4817 165 field->org_table_name = m_out_param_info->org_table_name;
4818 165 field->col_name = m_out_param_info->col_name;
4819 165 field->org_col_name = m_out_param_info->org_col_name;
4820
4821 165 field->length = m_out_param_info->length;
4822 165 field->charsetnr = m_out_param_info->charsetnr;
4823 165 field->flags = m_out_param_info->flags;
4824 165 field->decimals = m_out_param_info->decimals;
4825 165 field->type = m_out_param_info->type;
4826 }
4827
4828 /*
4829 Functions to convert item to field (for send_result_set_metadata)
4830 */
4831
4832 1952002 bool Item::fix_fields(THD *, Item **) {
4833
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 1952002 assert(is_contextualized());
4834
4835 // We do not check fields which are fixed during construction
4836
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 1952002 assert(fixed == 0 || basic_const_item());
4837 1952002 fixed = true;
4838 1952002 return false;
4839 }
4840
4841 748 double Item_ref_null_helper::val_real() {
4842 748 auto tmp = super::val_real();
4843 748 owner->was_null |= null_value;
4844 748 return tmp;
4845 }
4846
4847 1522 longlong Item_ref_null_helper::val_int() {
4848 1522 auto tmp = super::val_int();
4849 1522 owner->was_null |= null_value;
4850 1522 return tmp;
4851 }
4852
4853 4 longlong Item_ref_null_helper::val_time_temporal() {
4854 4 auto tmp = super::val_time_temporal();
4855 4 owner->was_null |= null_value;
4856 4 return tmp;
4857 }
4858
4859 393 longlong Item_ref_null_helper::val_date_temporal() {
4860 393 auto tmp = super::val_date_temporal();
4861 393 owner->was_null |= null_value;
4862 393 return tmp;
4863 }
4864
4865 499 my_decimal *Item_ref_null_helper::val_decimal(my_decimal *decimal_value) {
4866 499 auto tmp = super::val_decimal(decimal_value);
4867 499 owner->was_null |= null_value;
4868 499 return tmp;
4869 }
4870
4871 ✗ bool Item_ref_null_helper::val_bool() {
4872 ✗ auto tmp = super::val_bool();
4873 ✗ owner->was_null |= null_value;
4874 ✗ return tmp;
4875 }
4876
4877 2385 String *Item_ref_null_helper::val_str(String *s) {
4878 2385 auto tmp = super::val_str(s);
4879 2385 owner->was_null |= null_value;
4880 2385 return tmp;
4881 }
4882
4883 ✗ bool Item_ref_null_helper::get_date(MYSQL_TIME *ltime,
4884 my_time_flags_t fuzzydate) {
4885 ✗ auto tmp = super::get_date(ltime, fuzzydate);
4886 ✗ owner->was_null |= null_value;
4887 ✗ return tmp;
4888 }
4889
4890 /**
4891 Mark item and Query_blocks as dependent if item was resolved in
4892 outer SELECT.
4893
4894 @param thd Current session.
4895 @param last select from which current item depend
4896 @param current current select
4897 @param resolved_item item which was resolved in outer SELECT
4898 @param mark_item item which should be marked; resolved_item will be
4899 marked anyway.
4900 */
4901
4902 13578 static void mark_as_dependent(THD *thd, Query_block *last, Query_block *current,
4903 Item_ident *resolved_item,
4904 Item_ident *mark_item) {
4905
2/2
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 13578 const char *db_name = (resolved_item->db_name ? resolved_item->db_name : "");
4906 13578 const char *table_name =
4907
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 13578 (resolved_item->table_name ? resolved_item->table_name : "");
4908 /* store pointer on Query_block from which item is dependent */
4909
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 13578 if (mark_item) mark_item->depended_from = last;
4910 /*
4911 resolved_item is the one we are resolving (and we just found that it is an
4912 outer ref), its context is surely the subquery (see assertion below), so
4913 we set depended_from for it.
4914 */
4915 13578 resolved_item->depended_from = last;
4916
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 13578 assert(resolved_item->context->query_block == current);
4917
4918 13578 current->mark_as_dependent(last, false);
4919
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 13578 if (thd->lex->is_explain()) {
4920 /*
4921 UNION's result has select_number == INT_MAX which is printed as -1 and
4922 this is confusing. Instead, the number of the first SELECT in the UNION
4923 is printed as names in ORDER BY are resolved against select list of the
4924 first SELECT.
4925 */
4926 486 uint sel_nr = (last->select_number < INT_MAX)
4927
2/2
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✓ Branch 1 taken 10 times.
 496 ? last->select_number
4928 : last->master_query_expression()
4929 10 ->first_query_block()
4930 486 ->select_number;
4931 972 push_warning_printf(thd, Sql_condition::SL_NOTE, ER_WARN_FIELD_RESOLVED,
4932 ER_THD(thd, ER_WARN_FIELD_RESOLVED), db_name,
4933
2/2
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 486 (db_name[0] ? "." : ""), table_name,
4934
2/2
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 486 (table_name[0] ? "." : ""), resolved_item->field_name,
4935 current->select_number, sel_nr);
4936 }
4937 13578 }
4938
4939 /**
4940 Search a GROUP BY clause for a field with a certain name.
4941
4942 Search the GROUP BY list for a column named as find_item. When searching
4943 preference is given to columns that are qualified with the same table (and
4944 database) name as the one being searched for.
4945
4946 @param find_item the item being searched for
4947 @param group_list GROUP BY clause
4948
4949 @return
4950 - the found item on success
4951 - NULL if find_item is not in group_list
4952 */
4953
4954 681 static Item **find_field_in_group_list(Item *find_item, ORDER *group_list) {
4955 const char *db_name;
4956 const char *table_name;
4957 const char *field_name;
4958 681 ORDER *found_group = nullptr;
4959 681 int found_match_degree = 0;
4960 Item_ident *cur_field;
4961 681 int cur_match_degree = 0;
4962 char name_buff[NAME_LEN + 1];
4963
4964
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 1356 if (find_item->type() == Item::FIELD_ITEM ||
4965
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 675 find_item->type() == Item::REF_ITEM) {
4966 681 db_name = ((Item_ident *)find_item)->db_name;
4967 681 table_name = ((Item_ident *)find_item)->table_name;
4968 681 field_name = ((Item_ident *)find_item)->field_name;
4969 } else
4970 ✗ return nullptr;
4971
4972
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 681 if (db_name && lower_case_table_names) {
4973 /* Convert database to lower case for comparison */
4974 ✗ strmake(name_buff, db_name, sizeof(name_buff) - 1);
4975 ✗ my_casedn_str(files_charset_info, name_buff);
4976 ✗ db_name = name_buff;
4977 }
4978
4979
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 681 assert(field_name != nullptr);
4980
4981
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 1520 for (ORDER *cur_group = group_list; cur_group; cur_group = cur_group->next) {
4982
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 846 if ((*(cur_group->item))->real_item()->type() == Item::FIELD_ITEM) {
4983 646 cur_field = (Item_ident *)*cur_group->item;
4984 646 cur_match_degree = 0;
4985
4986
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 646 assert(cur_field->field_name != nullptr);
4987
4988
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✓ Branch 3 taken 379 times.
 646 if (!my_strcasecmp(system_charset_info, cur_field->field_name,
4989 field_name))
4990 267 ++cur_match_degree;
4991 else
4992 379 continue;
4993
4994
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 267 if (cur_field->table_name && table_name) {
4995 /* If field_name is qualified by a table name. */
4996
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 48 if (my_strcasecmp(table_alias_charset, cur_field->table_name,
4997 table_name))
4998 /* Same field names, different tables. */
4999 6 return nullptr;
5000
5001 42 ++cur_match_degree;
5002
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 42 if (cur_field->db_name && db_name) {
5003 /* If field_name is also qualified by a database name. */
5004
1/2
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 7 if (strcmp(cur_field->db_name, db_name))
5005 /* Same field names, different databases. */
5006 ✗ return nullptr;
5007 7 ++cur_match_degree;
5008 }
5009 }
5010
5011
2/2
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 261 if (cur_match_degree > found_match_degree) {
5012 260 found_match_degree = cur_match_degree;
5013 260 found_group = cur_group;
5014
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 2 } else if (found_group && (cur_match_degree == found_match_degree) &&
5015
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 1 !(*(found_group->item))->eq(cur_field, false)) {
5016 /*
5017 If the current resolve candidate matches equally well as the current
5018 best match, they must reference the same column, otherwise the field
5019 is ambiguous.
5020 */
5021
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 1 my_error(ER_NON_UNIQ_ERROR, MYF(0), find_item->full_name(),
5022
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 1 current_thd->where);
5023 1 return nullptr;
5024 }
5025 }
5026 }
5027
5028
2/2
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 674 if (found_group)
5029 259 return found_group->item;
5030 else
5031 415 return nullptr;
5032 }
5033
5034 /**
5035 Resolve a column reference in a sub-select.
5036
5037 Resolve a column reference (usually inside a HAVING clause) against the
5038 SELECT and GROUP BY clauses of the query described by 'select'. The name
5039 resolution algorithm searches both the SELECT and GROUP BY clauses, and in
5040 case of a name conflict prefers GROUP BY column names over SELECT names. If
5041 both clauses contain different fields with the same names, a warning is
5042 issued that name of 'ref' is ambiguous. We extend ANSI SQL in that when no
5043 GROUP BY column is found, then a HAVING name is resolved as a possibly
5044 derived SELECT column.
5045
5046 @param thd current thread
5047 @param ref column reference being resolved
5048 @param select the select that ref is resolved against
5049
5050 @note
5051 The resolution procedure is:
5052 - Search for a column or derived column named col_ref_i [in table T_j]
5053 in the SELECT clause of Q.
5054 - Search for a column named col_ref_i [in table T_j]
5055 in the GROUP BY clause of Q.
5056 - If found different columns with the same name in GROUP BY and SELECT,
5057 issue a warning
5058 - return the found GROUP BY column if any,
5059 - else return the found SELECT column if any.
5060
5061
5062 @return
5063 - NULL - there was an error, and the error was already reported
5064 - not_found_item - the item was not resolved, no error was reported
5065 - resolved item - if the item was resolved
5066 */
5067
5068 1502 static Item **resolve_ref_in_select_and_group(THD *thd, Item_ident *ref,
5069 Query_block *select) {
5070
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 1502 DBUG_TRACE;
5071 1502 Item **select_ref = nullptr;
5072 1502 ORDER *group_list = select->group_list.first;
5073 uint counter;
5074 enum_resolution_type resolution;
5075
5076 /*
5077 If a query block is a table constructor, both the SELECT list and the GROUP
5078 BY list don't exist. So there is no reason to search any of the lists.
5079 Besides, for a table constructor, we don't initialize the base_ref_items
5080 array until we process all the ROW() values. So we should give up if
5081 base_ref_items is empty.
5082 */
5083
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 1502 if (select->base_ref_items.empty()) return not_found_item;
5084
5085 /*
5086 Search for a column or derived column named as 'ref' in the SELECT
5087 clause of the current select.
5088 */
5089 1502 if (!(select_ref =
5090
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✓ Branch 3 taken 1499 times.
 1502 find_item_in_list(thd, ref, select->get_fields_list(), &counter,
5091 REPORT_EXCEPT_NOT_FOUND, &resolution)))
5092 3 return nullptr; /* Some error occurred. */
5093
2/2
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✓ Branch 1 taken 898 times.
 1499 if (resolution == RESOLVED_AGAINST_ALIAS) ref->set_alias_of_expr();
5094
5095 /* If this is a non-aggregated field inside HAVING, search in GROUP BY. */
5096
7/8
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 1499 if (select->having_fix_field && !ref->has_aggregation() && group_list) {
5097
1/2
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 681 Item **group_by_ref = find_field_in_group_list(ref, group_list);
5098
5099 /* Check if the fields found in SELECT and GROUP BY are the same field. */
5100
6/6
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✓ Branch 5 taken 680 times.
 820 if (group_by_ref && (select_ref != not_found_item) &&
5101
3/4
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 139 !((*group_by_ref)->eq(*select_ref, false))) {
5102
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 1 push_warning_printf(thd, Sql_condition::SL_WARNING, ER_NON_UNIQ_ERROR,
5103
1/2
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✗ Branch 1 not taken.
 1 ER_THD(thd, ER_NON_UNIQ_ERROR), ref->full_name(),
5104 thd->where);
5105 }
5106
5107
2/2
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✓ Branch 1 taken 422 times.
 681 if (group_by_ref != nullptr) return group_by_ref;
5108 }
5109
5110
2/2
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✓ Branch 1 taken 855 times.
 1240 if (select_ref == not_found_item) return not_found_item;
5111
5112
1/2
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 855 if ((*select_ref)->has_wf()) {
5113 /*
5114 We can't reference an alias to a window function expr from within
5115 a subquery or a HAVING clause
5116 */
5117 ✗ my_error(ER_WINDOW_INVALID_WINDOW_FUNC_ALIAS_USE, MYF(0), ref->field_name);
5118 ✗ return nullptr;
5119 }
5120
5121 /*
5122 The pointer in base_ref_items is nullptr if the column reference
5123 is a reference to itself, such as 'a' in:
5124
5125 SELECT (SELECT ... WHERE a = 1) AS a ...
5126
5127 Or if it's a reference to an expression that comes later in the
5128 select list, such as 'b' in:
5129
5130 SELECT (SELECT ... WHERE b = 1) AS a, (SELECT ...) AS b ...
5131
5132 Raise an error if such invalid references are encountered.
5133 */
5134
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 855 times.
 855 if (select->base_ref_items[counter] == nullptr) {
5135 ✗ my_error(ER_ILLEGAL_REFERENCE, MYF(0), ref->item_name.ptr(),
5136 "forward reference in item list");
5137 ✗ return nullptr;
5138 }
5139
5140
1/2
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✓ Branch 1 taken 855 times.
 855 assert((*select_ref)->fixed);
5141
5142 855 return &select->base_ref_items[counter];
5143 1502 }
5144
5145 /**
5146 Resolve the name of an outer select column reference.
5147
5148 The method resolves the column reference represented by 'this' as a column
5149 present in outer selects that contain current select.
5150
5151 In prepared statements, because of cache, find_field_in_tables()
5152 can resolve fields even if they don't belong to current context.
5153 In this case this method only finds appropriate context and marks
5154 current select as dependent. The found reference of field should be
5155 provided in 'from_field'.
5156
5157 @param[in] thd current thread
5158 @param[in,out] from_field found field reference or (Field*)not_found_field
5159 @param[in,out] reference view column if this item was resolved to a
5160 view column
5161
5162 @note
5163 This is the inner loop of Item_field::fix_fields:
5164 @code
5165 for each outer query Q_k beginning from the inner-most one
5166 {
5167 search for a column or derived column named col_ref_i
5168 [in table T_j] in the FROM clause of Q_k;
5169
5170 if such a column is not found
5171 Search for a column or derived column named col_ref_i
5172 [in table T_j] in the SELECT and GROUP clauses of Q_k.
5173 }
5174 @endcode
5175
5176 @retval
5177 1 column succefully resolved and fix_fields() should continue.
5178 @retval
5179 0 column fully fixed and fix_fields() should return false
5180 @retval
5181 -1 error occurred
5182 */
5183
5184 15219 int Item_field::fix_outer_field(THD *thd, Field **from_field,
5185 Item **reference) {
5186 15219 bool field_found = (*from_field != not_found_field);
5187 15219 bool upward_lookup = false;
5188
5189 /*
5190 If there are outer contexts (outer selects, but current select is
5191 not derived table or view) try to resolve this reference in the
5192 outer contexts.
5193
5194 We treat each subselect as a separate namespace, so that different
5195 subselects may contain columns with the same names. The subselects
5196 are searched starting from the innermost.
5197 */
5198 15219 Name_resolution_context *last_checked_context = context;
5199 15219 Item **ref = not_found_item;
5200 15219 Name_resolution_context *outer_context = context->outer_context;
5201 15219 Query_block *select = nullptr;
5202 15219 Query_expression *cur_query_expression = nullptr;
5203 15219 enum_parsing_context place = CTX_NONE;
5204 15219 Query_block *cur_query_block = context->query_block;
5205
2/2
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 15618 for (; outer_context; outer_context = outer_context->outer_context) {
5206 13950 select = outer_context->query_block;
5207
5208 13950 last_checked_context = outer_context;
5209 13950 upward_lookup = true;
5210
5211 /*
5212 We want to locate the qualifying query of our Item_field 'this'.
5213 'this' is simply contained in a subquery (Query_expression) which is
5214 immediately contained
5215 - in a scalar/row subquery (Item_subselect), or
5216 - in a table subquery itself immediately contained in a quantified
5217 predicate (Item_subselect) or a derived table (TABLE_LIST).
5218 'this' has an 'outer_context' where it should be searched first.
5219 'outer_context' is the context of a query block or sometimes
5220 of a specific part of a query block (e.g. JOIN... ON condition).
5221 We go up from 'context' to 'outer_context', from inner to outer
5222 subqueries. On that bottom-up path, we stop at the subquery unit which
5223 is simply contained in 'outer_context': it belongs to an
5224 Item_subselect/TABLE_LIST object which we note OUTER_CONTEXT_OBJECT.
5225 Then the search of 'this' in 'outer_context' is influenced by
5226 where OUTER_CONTEXT_OBJECT is in 'outer_context'. For example, if
5227 OUTER_CONTEXT_OBJECT is in WHERE, a search by alias is not done.
5228 Thus, given an 'outer_context' to search in, the first step is
5229 to determine OUTER_CONTEXT_OBJECT. Then we search for 'this' in
5230 'outer_context'. Then, if search is successful, we mark objects, from
5231 'context' up to 'outer_context', as follows:
5232 - OUTER_CONTEXT_OBJECT is marked as "using table map this->map()";
5233 - more inner subqueries are marked as "dependent on outer reference"
5234 (correlated, UNCACHEABLE_DEPENDENT bit)
5235 If search is not successful, retry with the yet-more-outer context
5236 (determine the new OUTER_CONTEXT_OBJECT, etc).
5237
5238 Note that any change here must be duplicated in Item_ref::fix_fields.
5239 */
5240
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✓ Branch 1 taken 13950 times.
 13950 DBUG_PRINT("outer_field",
5241 ("must reach target ctx (having SL#%d)", select->select_number));
5242 /*
5243 Walk from the innermost query block to the outermost until we find
5244 OUTER_CONTEXT_OBJECT; cur_query_block and cur_query_expression track where
5245 the walk currently is.
5246 */
5247 while (true) {
5248
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 14477 if (!cur_query_block) goto loop;
5249
1/2
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 14477 DBUG_PRINT("outer_field",
5250 ("in loop, in ctx of SL#%d", cur_query_block->select_number));
5251
1/2
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 14477 assert(cur_query_block != select);
5252 14477 cur_query_expression = cur_query_block->master_query_expression();
5253
2/2
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✓ Branch 1 taken 527 times.
 14477 if (cur_query_expression->outer_query_block() == select)
5254 13950 break; // the immediate container of cur_query_expression is
5255 // OUTER_CONTEXT_OBJECT
5256
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 527 times.
 527 DBUG_PRINT("outer_field",
5257 ("in loop, in ctx of SL#%d, not yet immediate child of target",
5258 cur_query_block->select_number));
5259 // cur_query_expression belongs to an object inside OUTER_CONTEXT_OBJECT,
5260 // mark it and go up:
5261 527 cur_query_expression->accumulate_used_tables(OUTER_REF_TABLE_BIT);
5262 527 cur_query_block = cur_query_expression->outer_query_block();
5263 }
5264
5265
1/2
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✓ Branch 1 taken 13950 times.
 13950 DBUG_PRINT("outer_field", ("out of loop, reached target ctx (having SL#%d)",
5266 cur_query_block->select_number));
5267
5268 // Place of OUTER_CONTEXT_OBJECT in 'outer_context' e.g. WHERE :
5269 13950 place = cur_query_expression->place();
5270
5271 // A non-lateral derived table cannot see tables of its owning query
5272
4/4
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✓ Branch 2 taken 21 times.
✓ Branch 3 taken 4255 times.
 13950 if (place == CTX_DERIVED && select->end_lateral_table == nullptr) continue;
5273
5274 /*
5275 If field was already found by first call
5276 to find_field_in_tables(), we only need to find appropriate context.
5277 */
5278
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 13929 times.
 13929 if (field_found &&
5279 ✗ outer_context->query_block != cached_table->query_block) {
5280 ✗ DBUG_PRINT("outer_field", ("but cached is of SL#%d, continue",
5281 cached_table->query_block->select_number));
5282 ✗ continue;
5283 }
5284
5285 /*
5286 In case of a view, find_field_in_tables() writes the pointer to
5287 the found view field into '*reference', in other words, it
5288 substitutes this Item_field with the found expression.
5289 */
5290
3/4
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✓ Branch 3 taken 461 times.
 27858 if (field_found ||
5291 13929 (*from_field = find_field_in_tables(
5292 thd, this, outer_context->first_name_resolution_table,
5293 outer_context->last_name_resolution_table, reference,
5294
2/2
✓ Branch 0 taken 13468 times.
✓ Branch 1 taken 461 times.
 13929 IGNORE_EXCEPT_NON_UNIQUE, thd->want_privilege, true)) !=
5295 not_found_field) {
5296
2/2
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✓ Branch 1 taken 1 times.
 13468 if (*from_field) {
5297
2/2
✓ Branch 0 taken 13411 times.
✓ Branch 1 taken 56 times.
 13467 if (*from_field != view_ref_found) {
5298 13411 cur_query_expression->accumulate_used_tables(
5299 13411 (*from_field)->table->pos_in_table_list->map());
5300 13411 set_field(*from_field);
5301
5302
2/2
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✓ Branch 1 taken 32 times.
 13411 if (!last_checked_context->query_block->having_fix_field &&
5303
4/4
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✓ Branch 1 taken 13190 times.
✓ Branch 2 taken 69 times.
✓ Branch 3 taken 120 times.
 13379 select->group_list.elements &&
5304
1/2
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✓ Branch 1 taken 69 times.
 69 (place == CTX_SELECT_LIST || place == CTX_HAVING)) {
5305 Item_outer_ref *rf;
5306 /*
5307 If an outer field is resolved in a grouping select then it
5308 is replaced for an Item_outer_ref object. Otherwise an
5309 Item_field object is used.
5310 */
5311
3/6
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✗ Branch 3 not taken.
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✓ Branch 5 taken 120 times.
 120 if (!(rf = new Item_outer_ref(context, this, select))) return -1;
5312 120 rf->in_sum_func = thd->lex->in_sum_func;
5313 120 *reference = rf;
5314 // WL#6570 remove-after-qa
5315
3/4
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✓ Branch 1 taken 116 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 4 times.
 120 assert(thd->stmt_arena->is_regular() ||
5316 !thd->lex->is_exec_started());
5317
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 120 times.
 120 if (rf->fix_fields(thd, nullptr)) return -1;
5318 }
5319 /*
5320 A reference is resolved to a nest level that's outer or the same as
5321 the nest level of the enclosing set function : adjust the value of
5322 max_aggr_level for the function if it's needed.
5323 */
5324
2/2
✓ Branch 0 taken 236 times.
✓ Branch 1 taken 13175 times.
 13411 if (thd->lex->in_sum_func &&
5325 236 thd->lex->in_sum_func->base_query_block->nest_level >=
5326
1/2
✓ Branch 0 taken 236 times.
✗ Branch 1 not taken.
 236 select->nest_level) {
5327 236 Item::Type ref_type = (*reference)->type();
5328 236 thd->lex->in_sum_func->max_aggr_level =
5329 472 max(thd->lex->in_sum_func->max_aggr_level,
5330 236 int8(select->nest_level));
5331 236 set_field(*from_field);
5332 236 fixed = true;
5333
2/2
✓ Branch 0 taken 215 times.
✓ Branch 1 taken 21 times.
 451 mark_as_dependent(thd, last_checked_context->query_block,
5334 236 context->query_block, this,
5335
1/2
✓ Branch 0 taken 215 times.
✗ Branch 1 not taken.
 215 ((ref_type == REF_ITEM || ref_type == FIELD_ITEM)
5336 ? (Item_ident *)(*reference)
5337 : nullptr));
5338 236 return 0;
5339 }
5340 } else {
5341
1/2
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✗ Branch 1 not taken.
 56 Item::Type ref_type = (*reference)->type();
5342 56 Used_tables ut(select);
5343 56 (void)(*reference)
5344
1/2
✓ Branch 0 taken 56 times.
✗ Branch 1 not taken.
 56 ->walk(&Item::used_tables_for_level, enum_walk::SUBQUERY_POSTFIX,
5345 pointer_cast<uchar *>(&ut));
5346
1/2
✓ Branch 0 taken 56 times.
✗ Branch 1 not taken.
 56 cur_query_expression->accumulate_used_tables(ut.used_tables);
5347
5348
4/4
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✓ Branch 1 taken 52 times.
✓ Branch 2 taken 1 times.
✓ Branch 3 taken 3 times.
 56 if (select->group_list.elements && place == CTX_HAVING) {
5349 /*
5350 If an outer field is resolved in a grouping query block then it
5351 is replaced with an Item_outer_ref object. Otherwise an
5352 Item_field object is used.
5353 */
5354 Item_outer_ref *const rf = new Item_outer_ref(
5355
2/4
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 1 context, down_cast<Item_ident *>(*reference), select);
5356
1/2
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✓ Branch 1 taken 1 times.
 1 if (rf == nullptr) return -1;
5357 1 rf->in_sum_func = thd->lex->in_sum_func;
5358 1 *reference = rf;
5359 // WL#6570 remove-after-qa
5360
1/4
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 1 assert(thd->stmt_arena->is_regular() ||
5361 !thd->lex->is_exec_started());
5362
2/4
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✗ Branch 1 not taken.
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✓ Branch 3 taken 1 times.
 1 if (rf->fix_fields(thd, nullptr)) return -1;
5363 }
5364
5365
1/2
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✓ Branch 1 taken 56 times.
 56 if (thd->lex->in_sum_func &&
5366 ✗ thd->lex->in_sum_func->base_query_block->nest_level >=
5367 ✗ select->nest_level)
5368 ✗ thd->lex->in_sum_func->max_aggr_level =
5369 ✗ max(thd->lex->in_sum_func->max_aggr_level,
5370 ✗ int8(select->nest_level));
5371
5372
2/4
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 56 if ((*reference)->used_tables() != 0)
5373
1/2
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✓ Branch 1 taken 56 times.
 56 mark_as_dependent(thd, last_checked_context->query_block,
5374
1/2
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✗ Branch 1 not taken.
 56 context->query_block, this,
5375 ✗ ref_type == REF_ITEM || ref_type == FIELD_ITEM
5376 56 ? down_cast<Item_ident *>(*reference)
5377 : NULL);
5378 /*
5379 A reference to a view field had been found and we
5380 substituted it instead of this Item (find_field_in_tables
5381 does it by assigning the new value to *reference), so now
5382 we can return from this function.
5383 */
5384 56 return 0;
5385 }
5386 }
5387 13176 break;
5388 }
5389
5390 /* Search in SELECT and GROUP lists of the outer select. */
5391
4/4
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✓ Branch 3 taken 106 times.
 817 if (select_alias_referencable(place) &&
5392
2/2
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✓ Branch 1 taken 1 times.
 356 outer_context->resolve_in_select_list) {
5393
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 355 times.
 355 if (!(ref = resolve_ref_in_select_and_group(thd, this, select)))
5394 ✗ return -1; /* Some error occurred (e.g. ambiguous names). */
5395
2/2
✓ Branch 0 taken 83 times.
✓ Branch 1 taken 272 times.
 355 if (ref != not_found_item) {
5396 // The item which we found is already fixed
5397
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 83 times.
 83 assert((*ref)->fixed);
5398 83 cur_query_expression->accumulate_used_tables((*ref)->used_tables());
5399 83 break;
5400 }
5401 }
5402
5403 /*
5404 Reference is not found in this select => this subquery depend on
5405 outer select (or we just trying to find wrong identifier, in this
5406 case it does not matter which used tables bits we set)
5407 */
5408
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 378 times.
 378 DBUG_PRINT("outer_field",
5409 ("out of loop, reached end of big block, continue"));
5410 378 cur_query_expression->accumulate_used_tables(OUTER_REF_TABLE_BIT);
5411 378 loop:;
5412 }
5413
5414
1/2
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✓ Branch 1 taken 14927 times.
 14927 assert(ref != nullptr);
5415
2/2
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✓ Branch 1 taken 14926 times.
 14927 if (!*from_field) return -1;
5416
4/4
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✓ Branch 1 taken 83 times.
✓ Branch 2 taken 1668 times.
✓ Branch 3 taken 13175 times.
 14926 if (ref == not_found_item && *from_field == not_found_field) {
5417
2/2
✓ Branch 0 taken 20 times.
✓ Branch 1 taken 1648 times.
 1668 if (upward_lookup) {
5418 // We can't say exactly what absent table or field
5419 20 my_error(ER_BAD_FIELD_ERROR, MYF(0), full_name(), thd->where);
5420 } else {
5421 /* Call find_field_in_tables only to report the error */
5422 1648 find_field_in_tables(thd, this, context->first_name_resolution_table,
5423 1648 context->last_name_resolution_table, reference,
5424 REPORT_ALL_ERRORS,
5425
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1648 times.
 1648 any_privileges ? 0 : thd->want_privilege, true);
5426 }
5427 1668 return -1;
5428
2/2
✓ Branch 0 taken 83 times.
✓ Branch 1 taken 13175 times.
 13258 } else if (ref != not_found_item) {
5429 Item *save;
5430 Item_ref *rf;
5431
5432 /* Should have been checked in resolve_ref_in_select_and_group(). */
5433
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 83 times.
 83 assert((*ref)->fixed);
5434 /*
5435 Here, a subset of actions performed by Item_ref::set_properties
5436 is not enough. So we pass ptr to NULL into Item_ref
5437 constructor, so no initialization is performed, and call
5438 fix_fields() below.
5439 */
5440 83 save = *ref;
5441 83 *ref = nullptr; // Don't call set_properties()
5442
4/4
✓ Branch 0 taken 69 times.
✓ Branch 1 taken 14 times.
✓ Branch 2 taken 52 times.
✓ Branch 3 taken 17 times.
 83 bool use_plain_ref = place == CTX_HAVING || !select->group_list.elements;
5443 83 rf = use_plain_ref
5444
2/2
✓ Branch 0 taken 66 times.
✓ Branch 1 taken 17 times.
 166 ? new Item_ref(context, ref, db_name, table_name, field_name,
5445
2/4
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✗ Branch 1 not taken.
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✗ Branch 3 not taken.
 66 m_alias_of_expr)
5446
1/2
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✗ Branch 1 not taken.
 34 : new Item_outer_ref(context, ref, db_name, table_name, field_name,
5447
1/2
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✗ Branch 1 not taken.
 34 m_alias_of_expr, select);
5448 83 *ref = save;
5449
1/2
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✓ Branch 1 taken 83 times.
 83 if (!rf) return -1;
5450
5451
2/2
✓ Branch 0 taken 17 times.
✓ Branch 1 taken 66 times.
 83 if (!use_plain_ref)
5452 17 ((Item_outer_ref *)rf)->in_sum_func = thd->lex->in_sum_func;
5453
5454 83 *reference = rf;
5455 // WL#6570 remove-after-qa
5456
3/4
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✗ Branch 2 not taken.
✓ Branch 3 taken 3 times.
 83 assert(thd->stmt_arena->is_regular() || !thd->lex->is_exec_started());
5457 /*
5458 rf is Item_ref => never substitute other items (in this case)
5459 during fix_fields() => we can use rf after fix_fields()
5460 */
5461
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 83 times.
 83 assert(!rf->fixed); // Assured by Item_ref()
5462
5/6
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✓ Branch 3 taken 46 times.
✓ Branch 4 taken 37 times.
✓ Branch 5 taken 46 times.
 83 if (rf->fix_fields(thd, reference) || rf->check_cols(1)) return -1;
5463
2/2
✓ Branch 0 taken 36 times.
✓ Branch 1 taken 10 times.
 46 if (rf->used_tables() != 0)
5464 36 mark_as_dependent(thd, last_checked_context->query_block,
5465 36 context->query_block, this, rf);
5466 46 return 0;
5467 } else {
5468 13175 mark_as_dependent(thd, last_checked_context->query_block,
5469 13175 context->query_block, this, (Item_ident *)*reference);
5470
2/2
✓ Branch 0 taken 13 times.
✓ Branch 1 taken 13162 times.
 13175 if (last_checked_context->query_block->having_fix_field) {
5471 Item_ref *rf;
5472 13 rf = new Item_ref(context,
5473 26 (cached_table->db[0] ? cached_table->db : nullptr),
5474
3/6
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 13 cached_table->alias, field_name);
5475
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 13 times.
 13 if (!rf) return -1;
5476 13 *reference = rf;
5477 // WL#6570 remove-after-qa
5478
1/4
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✓ Branch 1 taken 13 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 13 assert(thd->stmt_arena->is_regular() || !thd->lex->is_exec_started());
5479 /*
5480 rf is Item_ref => never substitute other items (in this case)
5481 during fix_fields() => we can use rf after fix_fields()
5482 */
5483
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 13 times.
 13 assert(!rf->fixed); // Assured by Item_ref()
5484
5/6
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✓ Branch 4 taken 1 times.
✓ Branch 5 taken 12 times.
 13 if (rf->fix_fields(thd, reference) || rf->check_cols(1)) return -1;
5485 12 return 0;
5486 }
5487 }
5488 13162 return 1;
5489 }
5490
5491 /**
5492 Check if the column reference that is currently being resolved, will be set
5493 to NULL if its qualifying query returns zero rows.
5494
5495 This is true for non-aggregated column references in the SELECT list,
5496 if the query block uses aggregation without grouping. For example:
5497
5498 SELECT COUNT(*), col FROM t WHERE some_condition
5499
5500 Here, if the table `t` is empty, or `some_condition` doesn't match any rows
5501 in `t`, the query returns one row where `col` is NULL, even if `col` is a
5502 not-nullable column.
5503
5504 Such column references are rejected if the ONLY_FULL_GROUP_BY SQL mode is
5505 enabled, in a later resolution phase.
5506 */
5507 82893648 bool is_null_on_empty_table(THD *thd, Item_field *i) {
5508 /*
5509 Nullability of a column item 'i' is normally determined from table's or
5510 view's definition. Additionally, an item may be nullable because its table
5511 is on the right side of a left join; but this has been handled by
5512 propagate_nullability() before coming here (@see TABLE::set_nullable() and
5513 Field::maybe_null()).
5514 If the table is in the left part of a left join, or is in an inner join, a
5515 non-nullable item may be set to NULL (table->set_null_row()) if, during
5516 optimization, its table is found to be empty (e.g. in read_system()) or the
5517 FROM clause of the qualifying query QQ of its table is found to return no
5518 rows. This makes a case where a non-nullable 'i' is set to NULL. Certain
5519 expressions containing the item, if evaluated, may find this abnormal
5520 behaviour. Fortunately, in the scenario described above, QQ's result is
5521 generally empty and so no expression is evaluated. Then we don't even
5522 optimize subquery expressions as their optimization may lead to evaluation
5523 of the item (e.g. in create_ref_for_key()).
5524 However there is one exception where QQ's result is not empty even though
5525 FROM clause's result is: when QQ is implicitly aggregated. In that case,
5526 return_zero_rows() sets all tables' columns to NULL and any expression in
5527 QQ's SELECT list is evaluated; to prepare for this, we mark the item 'i'
5528 as nullable below.
5529 - If item is not outer reference, we can reliably know if QQ is
5530 aggregated by testing QQ->with_sum_func
5531 - if it's outer reference, QQ->with_sum_func may not yet be set, e.g. if
5532 there is single set function referenced later in subquery and not yet
5533 resolved; but then context.query_block->with_sum_func is surely set (it's
5534 set at parsing time), so we test both members.
5535 - in_sum_func is the innermost set function SF containing the item;
5536 - if item is not an outer reference, and in_sum_func is set, SF is
5537 necessarily aggregated in QQ, and will not be evaluated (just be replaced
5538 with its "clear" value 0 or NULL), so we needn't mark 'i' as nullable;
5539 - if item is an outer reference and in_sum_func is set, we cannot yet know
5540 where SF is aggregated, it depends on other arguments of SF, so make a
5541 pessimistic assumption.
5542 Finally we test resolve_place; indeed, when QQ's result is empty, we only
5543 evaluate:
5544 - SELECT list
5545 - or HAVING, but columns of HAVING are always also present in SELECT list
5546 so are Item_ref to SELECT list and get nullability from that,
5547 - or ORDER BY but actually no as it's optimized away in such single-row
5548 query. This is not true for hypergraph optimizer. So we mark item as
5549 nullable if the query is ordered. For Ex: If there are window functions in
5550 ORDER BY, the order by list is cleared but not removed (See
5551 setup_order_final()). This makes hypergraph optimizer think it needs to
5552 execute the window function. Old optimizer does short circuiting in this
5553 case treating it as a constant plan.
5554 Note: we test with_sum_func (== references a set function);
5555 agg_func_used() (== is aggregation query) would be better but is not
5556 reliable yet at this stage.
5557 */
5558 82893648 Query_block *sl = i->context->query_block;
5559 82893648 Query_block *qsl = i->depended_from;
5560
5561
2/2
✓ Branch 0 taken 13162 times.
✓ Branch 1 taken 82880486 times.
 82893648 if (qsl != nullptr)
5562 21288 return qsl->resolve_place == Query_block::RESOLVE_SELECT_LIST &&
5563
6/6
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✓ Branch 3 taken 7285 times.
✓ Branch 4 taken 25 times.
✓ Branch 5 taken 816 times.
 20472 (sl->with_sum_func || qsl->with_sum_func) &&
5564
2/2
✓ Branch 0 taken 7264 times.
✓ Branch 1 taken 46 times.
 20472 qsl->group_list.elements == 0;
5565 else
5566 131712459 return (sl->resolve_place == Query_block::RESOLVE_SELECT_LIST ||
5567
3/4
✓ Branch 0 taken 67 times.
✓ Branch 1 taken 48831906 times.
✓ Branch 2 taken 424 times.
✗ Branch 3 not taken.
 48831973 (thd->lex->using_hypergraph_optimizer && sl->is_ordered())) &&
5568
6/6
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✓ Branch 3 taken 33001476 times.
✓ Branch 4 taken 112066 times.
✓ Branch 5 taken 935396 times.
 131824525 sl->with_sum_func && sl->group_list.elements == 0 &&
5569
2/2
✓ Branch 0 taken 139 times.
✓ Branch 1 taken 111927 times.
 82992552 thd->lex->in_sum_func == nullptr;
5570 }
5571
5572 /**
5573 Resolve the name of a column reference.
5574
5575 The method resolves the column reference represented by 'this' as a column
5576 present in one of: FROM clause, SELECT clause, GROUP BY clause of a query
5577 Q, or in outer queries that contain Q.
5578
5579 The name resolution algorithm used is (where [T_j] is an optional table
5580 name that qualifies the column name):
5581
5582 @code
5583 resolve_column_reference([T_j].col_ref_i)
5584 {
5585 search for a column or derived column named col_ref_i
5586 [in table T_j] in the FROM clause of Q;
5587
5588 if such a column is NOT found AND // Lookup in outer queries.
5589 there are outer queries
5590 {
5591 for each outer query Q_k beginning from the inner-most one
5592 {
5593 search for a column or derived column named col_ref_i
5594 [in table T_j] in the FROM clause of Q_k;
5595
5596 if such a column is not found
5597 Search for a column or derived column named col_ref_i
5598 [in table T_j] in the SELECT and GROUP clauses of Q_k.
5599 }
5600 }
5601 }
5602 @endcode
5603
5604 Notice that compared to Item_ref::fix_fields, here we first search the FROM
5605 clause, and then we search the SELECT and GROUP BY clauses.
5606
5607 For the case where a table reference is already set for the field,
5608 we just need to make a call to set_field(). This is true for a cloned
5609 field used during condition pushdown to derived tables. A cloned field
5610 inherits table reference, depended_from, cached_table, context and field
5611 from the original field. set_field() ensures all other members are set
5612 correctly.
5613
5614 @param[in] thd current thread
5615 @param[in,out] reference view column if this item was resolved to a
5616 view column
5617
5618 @retval
5619 true if error
5620 @retval
5621 false on success
5622 */
5623
5624 66948451 bool Item_field::fix_fields(THD *thd, Item **reference) {
5625
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 66948451 times.
 66948451 assert(fixed == 0);
5626 66948451 Field *from_field = not_found_field;
5627 66948451 bool outer_fixed = false;
5628
5629 Internal_error_handler_holder<View_error_handler, TABLE_LIST> view_handler(
5630
1/2
✓ Branch 0 taken 66948499 times.
✗ Branch 1 not taken.
 66948451 thd, context->view_error_handler, context->view_error_handler_arg);
5631
5632
2/2
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✓ Branch 1 taken 66827744 times.
 66948499 if (table_ref) {
5633 // This is a cloned field (used during condition pushdown to derived
5634 // tables). It has table reference and the field too. Make a call to
5635 // set_field() to ensure everything else gets set correctly.
5636 120755 TABLE_LIST *orig_table_ref = table_ref;
5637
1/2
✓ Branch 0 taken 120755 times.
✗ Branch 1 not taken.
 120755 set_field(field);
5638 // Note that the call to set_field() above would have set the "table_ref"
5639 // derived from field's table which in most cases is same as the already
5640 // set "table_ref". However, in case of update statements, while setting
5641 // up update_tables, table references are changed. Since condition pushdown
5642 // happens after this setup, we must make sure we set the original table
5643 // reference for the field.
5644 120755 table_ref = orig_table_ref;
5645 120755 return false;
5646 }
5647
1/2
✓ Branch 0 taken 66827772 times.
✗ Branch 1 not taken.
 66827744 if (!field) // If field is not checked
5648 {
5649 /*
5650 In case of view, find_field_in_tables() write pointer to view field
5651 expression to 'reference', i.e. it substitute that expression instead
5652 of this Item_field
5653 */
5654 133655544 from_field = find_field_in_tables(
5655 66827772 thd, this, context->first_name_resolution_table,
5656
1/2
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✗ Branch 1 not taken.
 66827772 context->last_name_resolution_table, reference,
5657
2/2
✓ Branch 0 taken 112516 times.
✓ Branch 1 taken 66715256 times.
 66827772 thd->lex->use_only_table_context ? REPORT_ALL_ERRORS
5658 : IGNORE_EXCEPT_NON_UNIQUE,
5659
2/2
✓ Branch 0 taken 382783 times.
✓ Branch 1 taken 66444989 times.
 66827772 any_privileges ? 0 : thd->want_privilege, true);
5660
3/4
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✓ Branch 2 taken 83 times.
✓ Branch 3 taken 66827811 times.
 66827762 if (thd->is_error()) goto error;
5661
2/2
✓ Branch 0 taken 15338 times.
✓ Branch 1 taken 66812473 times.
 66827811 if (from_field == not_found_field) {
5662 int ret;
5663 /* Look up in current select's item_list to find aliased fields */
5664
2/2
✓ Branch 0 taken 247 times.
✓ Branch 1 taken 15091 times.
 15338 if (thd->lex->current_query_block()->is_item_list_lookup) {
5665 uint counter;
5666 enum_resolution_type resolution;
5667
1/2
✓ Branch 0 taken 247 times.
✗ Branch 1 not taken.
 247 Item **res = find_item_in_list(
5668 247 thd, this, &thd->lex->current_query_block()->fields, &counter,
5669 REPORT_EXCEPT_NOT_FOUND, &resolution);
5670
2/2
✓ Branch 0 taken 3 times.
✓ Branch 1 taken 244 times.
 363 if (!res) return true;
5671
2/2
✓ Branch 0 taken 115 times.
✓ Branch 1 taken 129 times.
 244 if (resolution == RESOLVED_AGAINST_ALIAS) set_alias_of_expr();
5672
2/2
✓ Branch 0 taken 116 times.
✓ Branch 1 taken 128 times.
 244 if (res != not_found_item) {
5673
3/4
✓ Branch 0 taken 116 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 25 times.
✓ Branch 3 taken 91 times.
 116 if ((*res)->type() == Item::FIELD_ITEM) {
5674 /*
5675 It's an Item_field referencing another Item_field in the select
5676 list.
5677 Use the field from the Item_field in the select list and leave
5678 the Item_field instance in place.
5679 */
5680
5681 25 Item_field *const item_field = (Item_field *)(*res);
5682 25 Field *const new_field = item_field->field;
5683
5684
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 25 times.
 25 if (new_field == nullptr) {
5685 /* The column to which we link isn't valid. */
5686 ✗ my_error(ER_BAD_FIELD_ERROR, MYF(0), item_field->item_name.ptr(),
5687 thd->where);
5688 ✗ return true;
5689 }
5690
5691
1/2
✓ Branch 0 taken 25 times.
✗ Branch 1 not taken.
 25 set_field(new_field);
5692
5693 25 cached_table = table_ref;
5694
5695 // The found column may be an outer reference
5696
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 25 times.
 25 if (item_field->depended_from)
5697 ✗ mark_as_dependent(thd, item_field->depended_from,
5698 ✗ context->query_block, this, this);
5699
5700 25 return false;
5701 } else {
5702 /*
5703 It's not an Item_field in the select list so we must make a new
5704 Item_ref to point to the Item in the select list and replace the
5705 Item_field created by the parser with the new Item_ref.
5706 Ex: SELECT func1(col) as c ... ORDER BY func2(c);
5707 NOTE: If we are fixing an alias reference inside ORDER/GROUP BY
5708 item tree, then we use new Item_ref as an
5709 intermediate value to resolve referenced item only.
5710 In this case the new Item_ref item is unused.
5711 */
5712
2/2
✓ Branch 0 taken 90 times.
✓ Branch 1 taken 1 times.
 91 if (resolution == RESOLVED_AGAINST_ALIAS)
5713 90 res = &thd->lex->current_query_block()->base_ref_items[counter];
5714
5715 Item_ref *rf =
5716 new Item_ref(context, res, db_name, table_name, field_name,
5717
2/4
✓ Branch 0 taken 91 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 91 times.
✗ Branch 3 not taken.
 91 resolution == RESOLVED_AGAINST_ALIAS);
5718
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 91 times.
 91 if (rf == nullptr) return true;
5719
5720
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 91 times.
 91 if (!rf->fixed) {
5721 // No need for recursive resolving of aliases.
5722 const bool group_fix_field =
5723 ✗ thd->lex->current_query_block()->group_fix_field;
5724 ✗ thd->lex->current_query_block()->group_fix_field = false;
5725 bool fix_error =
5726 ✗ rf->fix_fields(thd, (Item **)&rf) || rf->check_cols(1);
5727 ✗ thd->lex->current_query_block()->group_fix_field =
5728 group_fix_field;
5729 ✗ if (fix_error) return true;
5730 }
5731 91 *reference = rf;
5732 // WL#6570 remove-after-qa
5733
3/4
✓ Branch 0 taken 3 times.
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✓ Branch 3 taken 3 times.
 91 assert(thd->stmt_arena->is_regular() ||
5734 !thd->lex->is_exec_started());
5735
5736 91 return false;
5737 }
5738 }
5739 }
5740
3/4
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✓ Branch 2 taken 1707 times.
✓ Branch 3 taken 13512 times.
 15219 if ((ret = fix_outer_field(thd, &from_field, reference)) < 0) goto error;
5741 13512 outer_fixed = true;
5742
2/2
✓ Branch 0 taken 350 times.
✓ Branch 1 taken 13162 times.
 13512 if (!ret) return false;
5743
2/2
✓ Branch 0 taken 6 times.
✓ Branch 1 taken 66812467 times.
 66812473 } else if (!from_field)
5744 6 goto error;
5745
5746 /*
5747 We should resolve this as an outer field reference if
5748 1. we haven't done it before, and
5749 2. the query_block of the table that contains this field is
5750 different from the query_block of the current name resolution
5751 context.
5752 */
5753
2/2
✓ Branch 0 taken 66812369 times.
✓ Branch 1 taken 13260 times.
 66825629 if (!outer_fixed && // 1
5754
3/4
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✓ Branch 1 taken 112569 times.
✓ Branch 2 taken 66699814 times.
✗ Branch 3 not taken.
 66812369 cached_table && cached_table->query_block &&
5755
1/2
✓ Branch 0 taken 66699837 times.
✗ Branch 1 not taken.
 66699814 context->query_block && // 2
5756
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 66699837 times.
 66699837 cached_table->query_block != context->query_block) {
5757 int ret;
5758 ✗ if ((ret = fix_outer_field(thd, &from_field, reference)) < 0) goto error;
5759 ✗ outer_fixed = true;
5760 ✗ if (!ret) return false;
5761 }
5762
5763 /*
5764 If inside an aggregation function, set the correct aggregation level.
5765 Even if a view reference is found, the level is still the query block
5766 associated with the context of the current item:
5767 */
5768
4/6
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 66825629 assert(from_field != view_ref_found ||
5769 context->query_block ==
5770 dynamic_cast<Item_ident *>(*reference)->context->query_block);
5771
2/2
✓ Branch 0 taken 824403 times.
✓ Branch 1 taken 66001226 times.
 66825629 if (thd->lex->in_sum_func &&
5772 824403 thd->lex->in_sum_func->base_query_block->nest_level ==
5773
2/2
✓ Branch 0 taken 824326 times.
✓ Branch 1 taken 77 times.
 824403 context->query_block->nest_level)
5774 824326 thd->lex->in_sum_func->max_aggr_level =
5775 1648652 max(thd->lex->in_sum_func->max_aggr_level,
5776 824326 int8(context->query_block->nest_level));
5777
5778 // If view column reference, Item in *reference is completely resolved:
5779
2/2
✓ Branch 0 taken 3047218 times.
✓ Branch 1 taken 63778411 times.
 66825629 if (from_field == view_ref_found) {
5780
3/4
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✓ Branch 2 taken 21 times.
✓ Branch 3 taken 3047197 times.
 3047218 if (is_null_on_empty_table(thd, this)) {
5781 21 (*reference)->set_nullable(true);
5782
4/6
✓ Branch 0 taken 21 times.
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✓ Branch 2 taken 21 times.
✗ Branch 3 not taken.
✓ Branch 4 taken 20 times.
✓ Branch 5 taken 1 times.
 21 if ((*reference)->real_item()->type() == Item::FIELD_ITEM) {
5783 // See below for explanation.
5784 TABLE *table =
5785
1/2
✓ Branch 0 taken 20 times.
✗ Branch 1 not taken.
 20 down_cast<Item_field *>((*reference)->real_item())->field->table;
5786 20 table->set_nullable();
5787 }
5788 }
5789 3047218 return false;
5790 }
5791
5792
3/4
✓ Branch 0 taken 63778424 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 2 times.
✓ Branch 3 taken 63778422 times.
 63778411 if (from_field->is_hidden_by_system()) {
5793 /*
5794 This field is either hidden by the storage engine or SQL layer. In
5795 either case, report column "not found" error.
5796 */
5797
1/2
✓ Branch 0 taken 2 times.
✗ Branch 1 not taken.
 2 my_error(ER_BAD_FIELD_ERROR, MYF(0), from_field->field_name, thd->where);
5798 2 return true;
5799 }
5800
5801 // Not view reference, not outer reference; need to set properties:
5802
1/2
✓ Branch 0 taken 63778159 times.
✗ Branch 1 not taken.
 63778422 set_field(from_field);
5803 ✗ } else if (thd->mark_used_columns != MARK_COLUMNS_NONE) {
5804 ✗ TABLE *table = field->table;
5805 MY_BITMAP *current_bitmap;
5806 MY_BITMAP *other_bitmap [[maybe_unused]];
5807 ✗ if (thd->mark_used_columns == MARK_COLUMNS_READ) {
5808 ✗ current_bitmap = table->read_set;
5809 ✗ other_bitmap = table->write_set;
5810 } else {
5811 ✗ current_bitmap = table->write_set;
5812 ✗ other_bitmap = table->read_set;
5813 }
5814 ✗ if (!bitmap_test_and_set(current_bitmap, field->field_index()))
5815 ✗ assert(bitmap_is_set(other_bitmap, field->field_index()));
5816 }
5817
2/2
✓ Branch 0 taken 371143 times.
✓ Branch 1 taken 63406988 times.
 63778131 if (any_privileges) {
5818 const char *db, *tab;
5819 371143 db = cached_table->get_db_name();
5820 371143 tab = cached_table->get_table_name();
5821
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 371143 times.
 371143 assert(field->table == table_ref->table);
5822 371143 if (!(have_privileges =
5823
2/4
✓ Branch 0 taken 371143 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 371143 times.
 371143 (get_column_grant(thd, &table_ref->grant, db, tab, field_name) &
5824 VIEW_ANY_ACL))) {
5825 ✗ my_error(ER_COLUMNACCESS_DENIED_ERROR, MYF(0), "ANY",
5826 ✗ thd->security_context()->priv_user().str,
5827 ✗ thd->security_context()->host_or_ip().str, field_name, tab);
5828 ✗ goto error;
5829 }
5830 }
5831 63778131 fixed = true;
5832
3/4
✓ Branch 0 taken 63778253 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 7382 times.
✓ Branch 3 taken 63770871 times.
 63778131 if (is_null_on_empty_table(thd, this)) {
5833 7382 set_nullable(true);
5834
5835 // The Item is now nullable, but the underlying field still isn't,
5836 // and Copy_field uses the underlying field. Thus,
5837 // ZeroRowsAggregatedIterator sets the _table_ row to NULL instead, and
5838 // thus, it needs to be nullable. This is similar to how inner tables of
5839 // outer joins need to be nullable.
5840 7382 field->table->set_nullable();
5841 }
5842 63778298 return false;
5843
5844 1796 error:
5845 1796 return true;
5846 66948538 }
5847
5848 22445531 void Item_field::bind_fields() {
5849
2/2
✓ Branch 0 taken 222588 times.
✓ Branch 1 taken 22222943 times.
 22445531 if (!fixed) return;
5850
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 22222943 times.
 22222943 assert(field_index != NO_FIELD_INDEX);
5851 /*
5852 Check consistency of Item_field objects:
5853 - If we have no table_ref, then field must be a valid pointer.
5854 (Applicable for expressions of generated columns).
5855 - Some temporary tables used for materialization (derived tables)
5856 have permanent metadata, hence both table_ref and field are valid.
5857 - All other tables that have a valid table_ref do not have a valid
5858 field reference at this point.
5859 */
5860
14/20
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✓ Branch 19 taken 28 times.
 22222943 assert((table_ref == nullptr && field != nullptr) ||
5861 (table_ref != nullptr &&
5862 (table_ref->is_view_or_derived() ||
5863 table_ref->is_recursive_reference()) &&
5864 field != nullptr) ||
5865 (table_ref != nullptr &&
5866 !(table_ref->is_view_or_derived() ||
5867 table_ref->is_recursive_reference()) &&
5868 field == nullptr));
5869
3/4
✓ Branch 0 taken 22187092 times.
✓ Branch 1 taken 36715 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 22187092 times.
 22223807 if (table_ref != nullptr && table_ref->table == nullptr) return;
5870
2/2
✓ Branch 0 taken 22150746 times.
✓ Branch 1 taken 73061 times.
 22223807 if (field == nullptr) {
5871 22150746 field = result_field = table_ref->table->field[field_index];
5872 22150746 m_orig_field_name = field->field_name;
5873 }
5874
2/2
✓ Branch 0 taken 36240 times.
✓ Branch 1 taken 22187567 times.
 22223807 if (table_name == nullptr) table_name = *field->table_name;
5875 }
5876
5877 11097 Item *Item_field::safe_charset_converter(THD *thd, const CHARSET_INFO *tocs) {
5878 11097 no_constant_propagation = true;
5879 11097 return Item::safe_charset_converter(thd, tocs);
5880 }
5881
5882 114223263 void Item_field::cleanup() {
5883
1/2
✓ Branch 0 taken 114225570 times.
✗ Branch 1 not taken.
 114223263 DBUG_TRACE;
5884
2/2
✓ Branch 0 taken 5205781 times.
✓ Branch 1 taken 109019789 times.
 114225570 if (!fixed) return;
5885
5886 109019789 Item_ident::cleanup();
5887 /*
5888 When TABLE is detached from TABLE_LIST, field pointers are invalid,
5889 unless field objects are created as part of statement (placeholder tables).
5890 Also invalidate the original field name, since it is usually determined
5891 from the field name in the Field object.
5892 */
5893
6/6
✓ Branch 0 taken 103468962 times.
✓ Branch 1 taken 5550185 times.
✓ Branch 2 taken 102589826 times.
✓ Branch 3 taken 879069 times.
✓ Branch 4 taken 102552502 times.
✓ Branch 5 taken 6467255 times.
 211609650 if (table_ref != nullptr && !table_ref->is_view_or_derived() &&
5894
2/2
✓ Branch 0 taken 102552574 times.
✓ Branch 1 taken 37929 times.
 102589826 !table_ref->is_recursive_reference()) {
5895 102552502 field = nullptr;
5896 102552502 m_orig_field_name = nullptr;
5897 }
5898
5899 // Restore result field back to the initial value
5900 109019757 result_field = field;
5901
5902 /*
5903 When table_ref is NULL, table_name must be reassigned together with
5904 table pointer.
5905 */
5906
2/2
✓ Branch 0 taken 5550705 times.
✓ Branch 1 taken 103469052 times.
 109019757 if (table_ref == nullptr) table_name = nullptr;
5907
5908 // Reset field before next optimization (multiple equality analysis)
5909 109019757 item_equal = nullptr;
5910 109019757 item_equal_all_join_nests = nullptr;
5911 109019757 null_value = false;
5912
2/2
✓ Branch 0 taken 109019943 times.
✓ Branch 1 taken 5205743 times.
 114225538 }
5913
5914 /**
5915 Reset all aspect of a field object, so that it can be re-resolved.
5916 This is only for use in prepared CREATE TABLE statements.
5917 @todo refactor CREATE TABLE so this is no longer needed.
5918 */
5919 2585 void Item_field::reset_field() {
5920
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2585 times.
 2585 assert(table_ref == nullptr);
5921 2585 fixed = false;
5922 2585 context = nullptr;
5923 2585 db_name = m_orig_db_name;
5924 2585 table_name = m_orig_table_name;
5925 2585 m_orig_field_name = field_name;
5926 2585 field = nullptr;
5927 2585 }
5928
5929 /**
5930 Find a field among specified multiple equalities.
5931
5932 The function first searches the field among multiple equalities
5933 of the current level (in the cond_equal->current_level list).
5934 If it fails, it continues searching in upper levels accessed
5935 through a pointer cond_equal->upper_levels.
5936 The search terminates as soon as a multiple equality containing
5937 the field is found.
5938
5939 @param cond_equal reference to list of multiple equalities where
5940 the field (this object) is to be looked for
5941
5942 @return
5943 - First Item_equal containing the field, if success
5944 - nullptr, otherwise
5945 */
5946
5947 6111284 Item_equal *Item_field::find_item_equal(COND_EQUAL *cond_equal) const {
5948
2/2
✓ Branch 0 taken 1078971 times.
✓ Branch 1 taken 5990964 times.
 7069935 while (cond_equal) {
5949
5/8
✓ Branch 0 taken 1078965 times.
✗ Branch 1 not taken.
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✓ Branch 4 taken 3195351 times.
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✓ Branch 6 taken 2236700 times.
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 3195324 for (Item_equal &item : cond_equal->current_level) {
5950
3/4
✓ Branch 0 taken 2236674 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 120321 times.
✓ Branch 3 taken 2116353 times.
 2236698 if (item.contains(field)) return &item;
5951 }
5952 /*
5953 The field is not found in any of the multiple equalities
5954 of the current level. Look for it in upper levels
5955 */
5956 958651 cond_equal = cond_equal->upper_levels;
5957 }
5958 5990964 return nullptr;
5959 }
5960
5961 /**
5962 Check whether a field can be substituted by an equal item.
5963
5964 The function checks whether a substitution of the field
5965 occurrence for an equal item is valid.
5966
5967 @param arg *arg != NULL <-> the field is in the context where
5968 substitution for an equal item is valid
5969
5970 @note
5971 The following statement is not always true:
5972 @n
5973 x=y => F(x)=F(x/y).
5974 @n
5975 This means substitution of an item for an equal item not always
5976 yields an equavalent condition. Here's an example:
5977 @code
5978 'a'='a '
5979 (LENGTH('a')=1) != (LENGTH('a ')=2)
5980 @endcode
5981 Such a substitution is surely valid if either the substituted
5982 field is not of a STRING type or if it is an argument of
5983 a comparison predicate.
5984
5985 @retval
5986 true substitution is valid
5987 @retval
5988 false otherwise
5989 */
5990
5991 2589460 bool Item_field::subst_argument_checker(uchar **arg) {
5992
4/4
✓ Branch 0 taken 2489942 times.
✓ Branch 1 taken 99531 times.
✓ Branch 2 taken 513433 times.
✓ Branch 3 taken 1976509 times.
 2589460 return (result_type() != STRING_RESULT) || (*arg);
5993 }
5994
5995 /**
5996 Convert a numeric value to a zero-filled string
5997
5998 @param[in,out] item the item to operate on
5999 @param field The field that this value is equated to
6000
6001 This function converts a numeric value to a string. In this conversion
6002 the zero-fill flag of the field is taken into account.
6003 This is required so the resulting string value can be used instead of
6004 the field reference when propagating equalities.
6005 */
6006
6007 5 static void convert_zerofill_number_to_string(Item **item,
6008 const Field_num *field) {
6009 char buff[MAX_FIELD_WIDTH], *pos;
6010 5 String tmp(buff, sizeof(buff), field->charset()), *res;
6011
6012
1/2
✓ Branch 0 taken 5 times.
✗ Branch 1 not taken.
 5 res = (*item)->val_str(&tmp);
6013
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 4 times.
 5 if ((*item)->null_value)
6014
1/2
✓ Branch 0 taken 1 times.
✗ Branch 1 not taken.
 2 *item = new Item_null();
6015 else {
6016
1/2
✓ Branch 0 taken 4 times.
✗ Branch 1 not taken.
 4 field->prepend_zeros(res);
6017
1/2
✓ Branch 0 taken 4 times.
✗ Branch 1 not taken.
 4 pos = sql_strmake(res->ptr(), res->length());
6018
2/4
✓ Branch 0 taken 4 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 4 times.
✗ Branch 3 not taken.
 4 *item = new Item_string(pos, res->length(), field->charset());
6019
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4 times.
 4 if (*item == nullptr) return;
6020 // Ensure the string has same properties as a number
6021 4 (*item)->collation.derivation = DERIVATION_NUMERIC;
6022 }
6023
1/2
✓ Branch 0 taken 5 times.
✗ Branch 1 not taken.
 5 }
6024
6025 /**
6026 Set a pointer to the multiple equality the field reference belongs to
6027 (if any).
6028
6029 The function looks for a multiple equality containing the field item
6030 among those referenced by arg.
6031 In the case such equality exists the function does the following.
6032 If the found multiple equality contains a constant, then the field
6033 reference is substituted for this constant, otherwise it sets a pointer
6034 to the multiple equality in the field item.
6035
6036
6037 @param arg reference to list of multiple equalities where
6038 the field (this object) is to be looked for
6039
6040 @note
6041 This function is supposed to be called as a callback parameter in calls
6042 of the compile method.
6043
6044 @return
6045 - pointer to the replacing constant item, if the field item was substituted
6046 - pointer to the field item, otherwise.
6047 */
6048
6049 612967 Item *Item_field::equal_fields_propagator(uchar *arg) {
6050
2/2
✓ Branch 0 taken 21016 times.
✓ Branch 1 taken 591951 times.
 612967 if (no_constant_propagation) return this;
6051
1/2
✓ Branch 0 taken 591952 times.
✗ Branch 1 not taken.
 591951 item_equal = find_item_equal((COND_EQUAL *)arg);
6052 591952 Item *item = nullptr;
6053
2/2
✓ Branch 0 taken 5039 times.
✓ Branch 1 taken 586913 times.
 591952 if (item_equal) item = item_equal->get_const();
6054 /*
6055 Disable const propagation for items used in different comparison contexts.
6056 This must be done because, for example, Item_hex_string->val_int() is not
6057 the same as (Item_hex_string->val_str() in BINARY column)->val_int().
6058 We cannot simply disable the replacement in a particular context (
6059 e.g. <bin_col> = <int_col> AND <bin_col> = <hex_string>) since
6060 Items don't know the context they are in and there are functions like
6061 IF (<hex_string>, 'yes', 'no').
6062
6063 Also, disable const propagation if the constant is nullable and this item is
6064 not. If we were to allow propagation in this case, we would also need to
6065 propagate the new nullability up to the parents of this item.
6066 */
6067
8/8
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✓ Branch 3 taken 26 times.
✓ Branch 4 taken 50 times.
✓ Branch 5 taken 1631 times.
✓ Branch 6 taken 590314 times.
✓ Branch 7 taken 1637 times.
 593682 if (item == nullptr || !has_compatible_context(item) ||
6068
2/2
✓ Branch 0 taken 43 times.
✓ Branch 1 taken 6 times.
 1731 (item->is_nullable() && !is_nullable()))
6069 590314 item = this;
6070
5/6
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✗ Branch 1 not taken.
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✓ Branch 4 taken 262 times.
✓ Branch 5 taken 1375 times.
 1899 else if (field && field->is_flag_set(ZEROFILL_FLAG) &&
6071
7/16
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 262 IS_NUM(field->type())) {
6072 /*
6073 We don't need to zero-fill timestamp columns here because they will be
6074 first converted to a string (in date/time format) and compared as such if
6075 compared with another string.
6076 */
6077
2/4
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✗ Branch 3 not taken.
 262 if (item && field->type() != FIELD_TYPE_TIMESTAMP &&
6078
5/6
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✓ Branch 2 taken 5 times.
✓ Branch 3 taken 257 times.
✓ Branch 4 taken 5 times.
✓ Branch 5 taken 257 times.
 529 cmp_context != INT_RESULT &&
6079
3/6
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✗ Branch 5 not taken.
 5 item->real_item()->type() != Item::REAL_ITEM)
6080
1/2
✓ Branch 0 taken 5 times.
✗ Branch 1 not taken.
 5 convert_zerofill_number_to_string(&item, (Field_num *)field);
6081 else
6082 257 item = this;
6083 }
6084 591951 return item;
6085 }
6086
6087 /**
6088 If this field is the target is the target of replacement, replace it with
6089 the info object's item or, if the item is found inside a subquery, the target
6090 is an outer reference, so we create a new Item_field, mark it accordingly
6091 and replace with that instead.
6092
6093 @param arg An info object of type Item::Item_field_replacement.
6094 @returns the resulting item, replaced or not, or nullptr if error
6095 */
6096 ✗ Item *Item_field::replace_item_field(uchar *arg) {
6097 ✗ auto *info = pointer_cast<Item::Item_field_replacement *>(arg);
6098
6099 ✗ if (field == info->m_target) {
6100 ✗ if (info->m_curr_block == info->m_trans_block) return info->m_item;
6101
6102 // The field is an outer reference, so we cannot reuse transformed query
6103 // block's Item_field; make a new one for this query block
6104 ✗ THD *const thd = current_thd;
6105 ✗ Item_field *outer_field = new (thd->mem_root) Item_field(thd, info->m_item);
6106 ✗ if (outer_field == nullptr) return nullptr; /* purecov: inspected */
6107 ✗ outer_field->depended_from = info->m_trans_block;
6108 ✗ outer_field->context = &info->m_curr_block->context;
6109 ✗ return outer_field;
6110 }
6111
6112 ✗ return this;
6113 }
6114
6115 /**
6116 Replace an Item_field for an equal Item_field that evaluated earlier
6117 (if any).
6118
6119 The function returns a pointer to an item that is taken from
6120 the very beginning of the item_equal list which the Item_field
6121 object refers to (belongs to) unless item_equal contains a constant
6122 item. In this case the function returns this constant item,
6123 (if the substitution does not require conversion).
6124 If the Item_field object does not refer any Item_equal object
6125 'this' is returned .
6126
6127 @note
6128 This function is supposed to be called as a callback parameter in calls
6129 of the thransformer method.
6130
6131 @return
6132 - pointer to a replacement Item_field if there is a better equal item or
6133 a pointer to a constant equal item;
6134 - this - otherwise.
6135 */
6136
6137 2863056 Item *Item_field::replace_equal_field(uchar *) {
6138
2/2
✓ Branch 0 taken 3588 times.
✓ Branch 1 taken 2859468 times.
 2863056 if (item_equal) {
6139 3588 Item *const_item = item_equal->get_const();
6140
2/2
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✓ Branch 1 taken 3242 times.
 3588 if (const_item) {
6141
2/2
✓ Branch 0 taken 26 times.
✓ Branch 1 taken 320 times.
 346 if (!has_compatible_context(const_item)) return this;
6142 320 return const_item;
6143 }
6144 3242 Item_field *subst = item_equal->get_subst_item(this);
6145
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 3242 times.
 3242 assert(subst);
6146
3/4
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✗ Branch 2 not taken.
✓ Branch 3 taken 992 times.
 3242 assert(table_ref == subst->table_ref ||
6147 table_ref->table != subst->table_ref->table);
6148
5/6
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✓ Branch 2 taken 992 times.
✗ Branch 3 not taken.
✓ Branch 4 taken 992 times.
✓ Branch 5 taken 2250 times.
 3242 if (table_ref != subst->table_ref && !field->eq(subst->field)) {
6149 // We may have to undo the substitution that is done here when setting up
6150 // hash join; the new field may be a field from a table that is not
6151 // reachable from hash join. Store which multi-equality we found the field
6152 // substitution in, so that we can go back and find a field that the hash
6153 // join can reach.
6154 992 subst->set_item_equal_all_join_nests(item_equal);
6155 992 return subst;
6156 }
6157 }
6158 2861718 return this;
6159 }
6160
6161 22127405 void Item::init_make_field(Send_field *tmp_field,
6162 enum enum_field_types field_type_arg) {
6163 22127405 const char *empty_name = "";
6164 22127405 tmp_field->db_name = empty_name;
6165 22127405 tmp_field->org_table_name = empty_name;
6166 22127405 tmp_field->org_col_name = empty_name;
6167 22127405 tmp_field->table_name = empty_name;
6168 22127405 tmp_field->col_name = item_name.ptr();
6169 22127410 tmp_field->charsetnr = collation.collation->number;
6170 22127405 tmp_field->flags =
6171
2/2
✓ Branch 0 taken 8007531 times.
✓ Branch 1 taken 14119879 times.
 22127410 (m_nullable ? 0 : NOT_NULL_FLAG) |
6172
2/2
✓ Branch 0 taken 5732026 times.
✓ Branch 1 taken 16395379 times.
 22127410 (my_binary_compare(charset_for_protocol()) ? BINARY_FLAG : 0);
6173 22127405 tmp_field->type = field_type_arg;
6174 22127405 tmp_field->length = max_length;
6175 22127405 tmp_field->decimals = decimals;
6176
2/2
✓ Branch 0 taken 3874173 times.
✓ Branch 1 taken 18253232 times.
 22127405 if (unsigned_flag) tmp_field->flags |= UNSIGNED_FLAG;
6177 22127405 tmp_field->field = false;
6178 22127405 }
6179
6180 12907279 void Item::make_field(Send_field *tmp_field) {
6181 12907279 init_make_field(tmp_field, data_type());
6182 12907284 }
6183
6184 9220127 void Item_empty_string::make_field(Send_field *tmp_field) {
6185 9220127 init_make_field(tmp_field, string_field_type(max_length));
6186 9220128 }
6187
6188 /**
6189 Verifies that the input string is well-formed according to its character set.
6190 @param str input string to verify
6191 @param send_error If true, call my_error if string is not well-formed.
6192 @param truncate If true, set to null/truncate if not well-formed.
6193
6194 @return
6195 If well-formed: input string.
6196 If not well-formed:
6197 if truncate is true and strict mode: NULL pointer and we set this
6198 Item's value to NULL.
6199 if truncate is true and not strict mode: input string truncated up to
6200 last good character.
6201 if truncate is false: input string is returned.
6202 */
6203 50134727 String *Item::check_well_formed_result(String *str, bool send_error,
6204 bool truncate) {
6205 /* Check whether we got a well-formed string */
6206 50134727 const CHARSET_INFO *cs = str->charset();
6207
6208 size_t valid_length;
6209 bool length_error;
6210
6211
3/4
✓ Branch 0 taken 50134718 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 4437 times.
✓ Branch 3 taken 50130281 times.
 50134949 if (validate_string(cs, str->ptr(), str->length(), &valid_length,
6212 &length_error)) {
6213 4437 const char *str_end = str->ptr() + str->length();
6214 4437 const char *print_byte = str->ptr() + valid_length;
6215
1/2
✓ Branch 0 taken 4437 times.
✗ Branch 1 not taken.
 4437 THD *thd = current_thd;
6216 char hexbuf[7];
6217 4437 size_t diff = min(size_t(str_end - print_byte), size_t(3));
6218
1/2
✓ Branch 0 taken 4437 times.
✗ Branch 1 not taken.
 4437 octet2hex(hexbuf, print_byte, diff);
6219
4/4
✓ Branch 0 taken 67 times.
✓ Branch 1 taken 4370 times.
✓ Branch 2 taken 65 times.
✓ Branch 3 taken 2 times.
 4437 if (send_error && length_error) {
6220
1/2
✓ Branch 0 taken 65 times.
✗ Branch 1 not taken.
 65 my_error(ER_INVALID_CHARACTER_STRING, MYF(0), cs->csname, hexbuf);
6221 65 return nullptr;
6222 }
6223
4/4
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✓ Branch 1 taken 206 times.
✓ Branch 2 taken 4164 times.
✓ Branch 3 taken 2 times.
 4372 if (truncate && length_error) {
6224
2/2
✓ Branch 0 taken 68 times.
✓ Branch 1 taken 4096 times.
 4164 if (thd->is_strict_mode()) {
6225 68 null_value = true;
6226 68 str = nullptr;
6227 } else {
6228 4096 str->length(valid_length);
6229 }
6230 }
6231
1/2
✓ Branch 0 taken 4372 times.
✗ Branch 1 not taken.
 4372 push_warning_printf(
6232 thd, Sql_condition::SL_WARNING, ER_INVALID_CHARACTER_STRING,
6233
1/2
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✗ Branch 1 not taken.
 4372 ER_THD(thd, ER_INVALID_CHARACTER_STRING), cs->csname, hexbuf);
6234 }
6235 50134653 return str;
6236 }
6237
6238 /*
6239 Compare two items using a given collation
6240
6241 SYNOPSIS
6242 eq_by_collation()
6243 item item to compare with
6244 binary_cmp true <-> compare as binaries
6245 cs collation to use when comparing strings
6246
6247 DESCRIPTION
6248 This method works exactly as Item::eq if the collation cs coincides with
6249 the collation of the compared objects. Otherwise, first the collations that
6250 differ from cs are replaced for cs and then the items are compared by
6251 Item::eq. After the comparison the original collations of items are
6252 restored.
6253
6254 RETURN
6255 1 compared items has been detected as equal
6256 0 otherwise
6257 */
6258
6259 2465 bool Item::eq_by_collation(Item *item, bool binary_cmp,
6260 const CHARSET_INFO *cs) {
6261 2465 const CHARSET_INFO *save_cs = nullptr;
6262 2465 const CHARSET_INFO *save_item_cs = nullptr;
6263
2/2
✓ Branch 0 taken 194 times.
✓ Branch 1 taken 2271 times.
 2465 if (collation.collation != cs) {
6264 194 save_cs = collation.collation;
6265 194 collation.collation = cs;
6266 }
6267
2/2
✓ Branch 0 taken 315 times.
✓ Branch 1 taken 2150 times.
 2465 if (item->collation.collation != cs) {
6268 315 save_item_cs = item->collation.collation;
6269 315 item->collation.collation = cs;
6270 }
6271 2465 bool res = eq(item, binary_cmp);
6272
2/2
✓ Branch 0 taken 194 times.
✓ Branch 1 taken 2271 times.
 2465 if (save_cs) collation.collation = save_cs;
6273
2/2
✓ Branch 0 taken 315 times.
✓ Branch 1 taken 2150 times.
 2465 if (save_item_cs) item->collation.collation = save_item_cs;
6274 2465 return res;
6275 }
6276
6277 /**
6278 Create a field to hold a string value from an item.
6279
6280 If max_length > CONVERT_IF_BIGGER_TO_BLOB create a blob @n
6281 If max_length > 0 create a varchar @n
6282 If max_length == 0 create a CHAR(0)
6283
6284 @param table Table for which the field is created
6285 */
6286
6287 1189963 Field *Item::make_string_field(TABLE *table) const {
6288 Field *field;
6289
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1189963 times.
 1189963 assert(collation.collation);
6290
2/2
✓ Branch 0 taken 9 times.
✓ Branch 1 taken 1189954 times.
 1189963 if (data_type() == MYSQL_TYPE_JSON)
6291 9 field =
6292
2/4
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✗ Branch 1 not taken.
✓ Branch 2 taken 9 times.
✗ Branch 3 not taken.
 9 new (*THR_MALLOC) Field_json(max_length, m_nullable, item_name.ptr());
6293
2/2
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✓ Branch 1 taken 1189948 times.
 1189954 else if (data_type() == MYSQL_TYPE_GEOMETRY) {
6294
2/4
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✗ Branch 1 not taken.
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✗ Branch 3 not taken.
 18 field = new (*THR_MALLOC)
6295 6 Field_geom(max_length, m_nullable, item_name.ptr(),
6296
1/2
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✗ Branch 1 not taken.
 24 Field::GEOM_GEOMETRY, std::optional<gis::srid_t>());
6297
2/2
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✓ Branch 1 taken 902365 times.
 1189948 } else if (max_length / collation.collation->mbmaxlen >
6298 CONVERT_IF_BIGGER_TO_BLOB)
6299
1/2
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✗ Branch 1 not taken.
 862749 field = new (*THR_MALLOC) Field_blob(
6300
1/2
✓ Branch 0 taken 287583 times.
✗ Branch 1 not taken.
 862749 max_length, m_nullable, item_name.ptr(), collation.collation, true);
6301 /* Item_type_holder holds the exact type, do not change it */
6302
4/4
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✓ Branch 2 taken 883818 times.
✓ Branch 3 taken 18547 times.
 1786450 else if (max_length > 0 &&
6303
4/4
✓ Branch 0 taken 111261 times.
✓ Branch 1 taken 772824 times.
✓ Branch 2 taken 110994 times.
✓ Branch 3 taken 267 times.
 884085 (type() != Item::TYPE_HOLDER || data_type() != MYSQL_TYPE_STRING))
6304
1/2
✓ Branch 0 taken 883818 times.
✗ Branch 1 not taken.
 2651454 field = new (*THR_MALLOC) Field_varstring(
6305
1/2
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✗ Branch 1 not taken.
 2651454 max_length, m_nullable, item_name.ptr(), table->s, collation.collation);
6306 else
6307
1/2
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✗ Branch 1 not taken.
 55641 field = new (*THR_MALLOC) Field_string(
6308
1/2
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✗ Branch 1 not taken.
 55641 max_length, m_nullable, item_name.ptr(), collation.collation);
6309
1/2
✓ Branch 0 taken 1189963 times.
✗ Branch 1 not taken.
 1189963 if (field) field->init(table);
6310 1189963 return field;
6311 }
6312
6313 /**
6314 Create a field based on field_type of argument.
6315
6316 For now, this is only used to create a field for
6317 IFNULL(x,something) and time functions
6318
6319 @return Created field
6320 @retval NULL error
6321 */
6322
6323 2336312 Field *Item::tmp_table_field_from_field_type(TABLE *table,
6324 bool fixed_length) const {
6325 /*
6326 The field functions defines a field to be not null if null_ptr is not 0
6327 */
6328 Field *field;
6329
6330
19/20
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✓ Branch 1 taken 1132 times.
✓ Branch 2 taken 2268 times.
✓ Branch 3 taken 277172 times.
✓ Branch 4 taken 1322994 times.
✓ Branch 5 taken 5 times.
✓ Branch 6 taken 67832 times.
✓ Branch 7 taken 13 times.
✓ Branch 8 taken 239 times.
✓ Branch 9 taken 34409 times.
✓ Branch 10 taken 53 times.
✓ Branch 11 taken 164083 times.
✓ Branch 12 taken 4 times.
✓ Branch 13 taken 4 times.
✗ Branch 14 not taken.
✓ Branch 15 taken 302 times.
✓ Branch 16 taken 442397 times.
✓ Branch 17 taken 11546 times.
✓ Branch 18 taken 194 times.
✓ Branch 19 taken 263 times.
 2336312 switch (data_type()) {
6331 11402 case MYSQL_TYPE_DECIMAL:
6332 case MYSQL_TYPE_NEWDECIMAL:
6333 11402 field = Field_new_decimal::create_from_item(this);
6334 11402 break;
6335 1132 case MYSQL_TYPE_TINY:
6336
1/2
✓ Branch 0 taken 1132 times.
✗ Branch 1 not taken.
 3396 field = new (*THR_MALLOC)
6337
1/2
✓ Branch 0 taken 1132 times.
✗ Branch 1 not taken.
 3396 Field_tiny(max_length, m_nullable, item_name.ptr(), unsigned_flag);
6338 1132 break;
6339 2268 case MYSQL_TYPE_SHORT:
6340
1/2
✓ Branch 0 taken 2268 times.
✗ Branch 1 not taken.
 6804 field = new (*THR_MALLOC)
6341
1/2
✓ Branch 0 taken 2268 times.
✗ Branch 1 not taken.
 6804 Field_short(max_length, m_nullable, item_name.ptr(), unsigned_flag);
6342 2268 break;
6343 277172 case MYSQL_TYPE_LONG:
6344
1/2
✓ Branch 0 taken 277172 times.
✗ Branch 1 not taken.
 831516 field = new (*THR_MALLOC)
6345
1/2
✓ Branch 0 taken 277172 times.
✗ Branch 1 not taken.
 831516 Field_long(max_length, m_nullable, item_name.ptr(), unsigned_flag);
6346 277172 break;
6347 1322994 case MYSQL_TYPE_LONGLONG:
6348
1/2
✓ Branch 0 taken 1322994 times.
✗ Branch 1 not taken.
 3968982 field = new (*THR_MALLOC) Field_longlong(max_length, m_nullable,
6349
1/2
✓ Branch 0 taken 1322994 times.
✗ Branch 1 not taken.
 3968982 item_name.ptr(), unsigned_flag);
6350 1322994 break;
6351 5 case MYSQL_TYPE_FLOAT:
6352
1/2
✓ Branch 0 taken 5 times.
✗ Branch 1 not taken.
 15 field = new (*THR_MALLOC) Field_float(
6353
1/2
✓ Branch 0 taken 5 times.
✗ Branch 1 not taken.
 15 max_length, m_nullable, item_name.ptr(), decimals, unsigned_flag);
6354 5 break;
6355 67832 case MYSQL_TYPE_DOUBLE:
6356
1/2
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✗ Branch 1 not taken.
 203496 field = new (*THR_MALLOC) Field_double(
6357
1/2
✓ Branch 0 taken 67832 times.
✗ Branch 1 not taken.
 203496 max_length, m_nullable, item_name.ptr(), decimals, unsigned_flag);
6358 67832 break;
6359 13 case MYSQL_TYPE_INT24:
6360
1/2
✓ Branch 0 taken 13 times.
✗ Branch 1 not taken.
 39 field = new (*THR_MALLOC)
6361
1/2
✓ Branch 0 taken 13 times.
✗ Branch 1 not taken.
 39 Field_medium(max_length, m_nullable, item_name.ptr(), unsigned_flag);
6362 13 break;
6363 239 case MYSQL_TYPE_DATE:
6364 case MYSQL_TYPE_NEWDATE:
6365
2/4
✓ Branch 0 taken 239 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 239 times.
✗ Branch 3 not taken.
 239 field = new (*THR_MALLOC) Field_newdate(m_nullable, item_name.ptr());
6366 239 break;
6367 34409 case MYSQL_TYPE_TIME:
6368 34409 field =
6369
2/4
✓ Branch 0 taken 34409 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 34409 times.
✗ Branch 3 not taken.
 34409 new (*THR_MALLOC) Field_timef(m_nullable, item_name.ptr(), decimals);
6370 34409 break;
6371 53 case MYSQL_TYPE_TIMESTAMP:
6372
1/2
✓ Branch 0 taken 53 times.
✗ Branch 1 not taken.
 159 field = new (*THR_MALLOC)
6373
1/2
✓ Branch 0 taken 53 times.
✗ Branch 1 not taken.
 159 Field_timestampf(m_nullable, item_name.ptr(), decimals);
6374 53 break;
6375 164083 case MYSQL_TYPE_DATETIME:
6376
1/2
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✗ Branch 1 not taken.
 492249 field = new (*THR_MALLOC)
6377
1/2
✓ Branch 0 taken 164083 times.
✗ Branch 1 not taken.
 492249 Field_datetimef(m_nullable, item_name.ptr(), decimals);
6378 164083 break;
6379 4 case MYSQL_TYPE_YEAR:
6380
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4 times.
 4 assert(max_length == 4); // Field_year is only for length 4.
6381
2/4
✓ Branch 0 taken 4 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 4 times.
✗ Branch 3 not taken.
 4 field = new (*THR_MALLOC) Field_year(m_nullable, item_name.ptr());
6382 4 break;
6383 4 case MYSQL_TYPE_BIT:
6384
1/2
✓ Branch 0 taken 4 times.
✗ Branch 1 not taken.
 12 field = new (*THR_MALLOC)
6385
1/2
✓ Branch 0 taken 4 times.
✗ Branch 1 not taken.
 12 Field_bit_as_char(max_length, m_nullable, item_name.ptr());
6386 4 break;
6387 ✗ case MYSQL_TYPE_INVALID:
6388 case MYSQL_TYPE_BOOL:
6389 default:
6390 /* This case should never be chosen */
6391 ✗ assert(0);
6392 /* If something goes awfully wrong, it's better to get a string than die
6393 */
6394 302 case MYSQL_TYPE_STRING:
6395 case MYSQL_TYPE_NULL:
6396
1/4
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✓ Branch 1 taken 302 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 302 if (fixed_length && max_length <= CONVERT_IF_BIGGER_TO_BLOB) {
6397 ✗ field = new (*THR_MALLOC) Field_string(
6398 ✗ max_length, m_nullable, item_name.ptr(), collation.collation);
6399 ✗ break;
6400 }
6401 /* Fall through to make_string_field() */
6402 [[fallthrough]];
6403 case MYSQL_TYPE_ENUM:
6404 case MYSQL_TYPE_SET:
6405 case MYSQL_TYPE_VAR_STRING:
6406 case MYSQL_TYPE_VARCHAR:
6407 442699 return make_string_field(table);
6408 11546 case MYSQL_TYPE_TINY_BLOB:
6409 case MYSQL_TYPE_MEDIUM_BLOB:
6410 case MYSQL_TYPE_LONG_BLOB:
6411 case MYSQL_TYPE_BLOB:
6412
2/2
✓ Branch 0 taken 11365 times.
✓ Branch 1 taken 181 times.
 11546 if (this->type() == Item::TYPE_HOLDER)
6413
1/2
✓ Branch 0 taken 11365 times.
✗ Branch 1 not taken.
 34095 field = new (*THR_MALLOC) Field_blob(
6414
1/2
✓ Branch 0 taken 11365 times.
✗ Branch 1 not taken.
 34095 max_length, m_nullable, item_name.ptr(), collation.collation, true);
6415 else
6416
1/2
✓ Branch 0 taken 181 times.
✗ Branch 1 not taken.
 543 field = new (*THR_MALLOC)
6417 181 Field_blob(max_length, m_nullable, item_name.ptr(),
6418
1/2
✓ Branch 0 taken 181 times.
✗ Branch 1 not taken.
 362 collation.collation, false);
6419 11546 break; // Blob handled outside of case
6420 194 case MYSQL_TYPE_GEOMETRY:
6421
2/4
✓ Branch 0 taken 194 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 194 times.
✗ Branch 3 not taken.
 582 field = new (*THR_MALLOC) Field_geom(
6422
1/2
✓ Branch 0 taken 194 times.
✗ Branch 1 not taken.
 582 max_length, m_nullable, item_name.ptr(), get_geometry_type(), {});
6423 194 break;
6424 263 case MYSQL_TYPE_JSON:
6425 263 field =
6426
2/4
✓ Branch 0 taken 263 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 263 times.
✗ Branch 3 not taken.
 263 new (*THR_MALLOC) Field_json(max_length, m_nullable, item_name.ptr());
6427 }
6428
1/2
✓ Branch 0 taken 1893613 times.
✗ Branch 1 not taken.
 1893613 if (field) field->init(table);
6429 1893613 return field;
6430 }
6431
6432 /* ARGSUSED */
6433 6737727 void Item_field::make_field(Send_field *tmp_field) {
6434 6737727 field->make_send_field(tmp_field);
6435
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 6737724 times.
 6737724 assert(tmp_field->table_name != nullptr);
6436
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 6737727 times.
 6737724 assert(item_name.is_set());
6437 6737727 tmp_field->col_name = item_name.ptr(); // Use user supplied name
6438
2/2
✓ Branch 0 taken 6649445 times.
✓ Branch 1 taken 88280 times.
 6737725 tmp_field->table_name = table_name != nullptr ? table_name : "";
6439
2/2
✓ Branch 0 taken 6459877 times.
✓ Branch 1 taken 277848 times.
 6737725 tmp_field->db_name = m_orig_db_name != nullptr ? m_orig_db_name : "";
6440 6737725 tmp_field->org_table_name =
6441
2/2
✓ Branch 0 taken 5923668 times.
✓ Branch 1 taken 814057 times.
 6737725 m_orig_table_name != nullptr ? m_orig_table_name : "";
6442 6737725 tmp_field->org_col_name =
6443
2/2
✓ Branch 0 taken 6731786 times.
✓ Branch 1 taken 5939 times.
 6737725 m_orig_field_name != nullptr ? m_orig_field_name : "";
6444 6737725 tmp_field->field = true;
6445 6737725 }
6446
6447 /**
6448 Copies/converts data from “from” to “to”, but is faster on repeated execution
6449 with the same “to” field, as it caches the fields_are_memcpyable() and
6450 pack_length() calls. These are not terribly expensive in themselves, but it
6451 adds up to 5–10% in DBT-3 Q1 due to the repeated calls.
6452
6453 The “from” field _must_ correspond to the same last_to / to_is_memcpyable pair
6454 as earlier calls, unless last_to is cleared to nullptr.
6455 */
6456 243572241 static inline type_conversion_status field_conv_with_cache(
6457 Field *to, Field *from, Field **last_to, uint32_t *to_is_memcpyable) {
6458
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 243572536 times.
 243572241 assert(to->field_ptr() != from->field_ptr());
6459
2/2
✓ Branch 0 taken 8539166 times.
✓ Branch 1 taken 235033370 times.
 243572536 if (to != *last_to) {
6460 8539166 *last_to = to;
6461
2/2
✓ Branch 0 taken 6524646 times.
✓ Branch 1 taken 2014522 times.
 8539166 if (fields_are_memcpyable(to, from)) {
6462 6524646 *to_is_memcpyable = to->pack_length();
6463 } else {
6464 2014522 *to_is_memcpyable = -1;
6465 }
6466 }
6467
2/2
✓ Branch 0 taken 119777667 times.
✓ Branch 1 taken 123794872 times.
 243572539 if (*to_is_memcpyable != static_cast<uint32_t>(-1)) {
6468 119777667 memcpy(to->field_ptr(), from->field_ptr(), *to_is_memcpyable);
6469 119777667 return TYPE_OK;
6470 } else {
6471 123794872 return field_conv_slow(to, from);
6472 }
6473 }
6474
6475 /**
6476 Set a field's value from a item.
6477 */
6478
6479 5820869 void Item_field::save_org_in_field(Field *to) {
6480
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 5820869 times.
 5820869 if (field == to) {
6481 ✗ assert(null_value == field->is_null());
6482 ✗ return;
6483
2/2
✓ Branch 0 taken 2538 times.
✓ Branch 1 taken 5818331 times.
 5820869 } else if (field->is_null()) {
6484 2538 null_value = true;
6485 2538 set_field_to_null_with_conversions(to, true);
6486 } else {
6487 5818331 to->set_notnull();
6488 5818331 field_conv_with_cache(to, field, &last_org_destination_field,
6489 &last_org_destination_field_memcpyable);
6490 5818331 null_value = false;
6491 }
6492 }
6493
6494 252168792 type_conversion_status Item_field::save_in_field_inner(Field *to,
6495 bool no_conversions) {
6496
1/2
✓ Branch 0 taken 252169208 times.
✗ Branch 1 not taken.
 252168792 DBUG_TRACE;
6497
3/4
✓ Branch 0 taken 252169046 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 14414085 times.
✓ Branch 3 taken 237754961 times.
 252169208 if (field->is_null()) {
6498 14414085 null_value = true;
6499 const type_conversion_status status =
6500
1/2
✓ Branch 0 taken 14414085 times.
✗ Branch 1 not taken.
 14414085 set_field_to_null_with_conversions(to, no_conversions);
6501 14414085 return status;
6502 }
6503
1/2
✓ Branch 0 taken 237755044 times.
✗ Branch 1 not taken.
 237754961 to->set_notnull();
6504 237755044 null_value = false;
6505
6506 /*
6507 If we're setting the same field as the one we're reading from there's
6508 nothing to do. This can happen in 'SET x = x' type of scenarios.
6509 */
6510
2/2
✓ Branch 0 taken 855 times.
✓ Branch 1 taken 237754189 times.
 237755044 if (to == field) {
6511 855 return TYPE_OK;
6512 }
6513
1/2
✓ Branch 0 taken 237754150 times.
✗ Branch 1 not taken.
 237754189 return field_conv_with_cache(to, field, &last_destination_field,
6514 237754150 &last_destination_field_memcpyable);
6515 252169090 }
6516
6517 /**
6518 Store null in field.
6519
6520 This is used on INSERT.
6521 Allow NULL to be inserted in timestamp and auto_increment values.
6522
6523 @param field Field where we want to store NULL
6524 @param no_conversions Set to 1 if we should return 1 if field can't
6525 take null values.
6526 If set to 0 we will do store the 'default value'
6527 if the field is a special field. If not we will
6528 give an error.
6529
6530 @retval
6531 0 ok
6532 @retval
6533 1 Field doesn't support NULL values and can't handle 'field = NULL'
6534 */
6535
6536 4571015 type_conversion_status Item_null::save_in_field_inner(Field *field,
6537 bool no_conversions) {
6538 4571015 return set_field_to_null_with_conversions(field, no_conversions);
6539 }
6540
6541 391608771 type_conversion_status Item::save_in_field(Field *field, bool no_conversions) {
6542
1/2
✓ Branch 0 taken 391611456 times.
✗ Branch 1 not taken.
 391608771 DBUG_TRACE;
6543 // In case this is a hidden column used for a functional index, insert
6544 // an error handler that catches any errors that tries to print out the
6545 // name of the hidden column. It will instead print out the functional
6546 // index name.
6547
6548 Functional_index_error_handler functional_index_error_handler(field,
6549
2/4
✓ Branch 0 taken 391610734 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 391611211 times.
✗ Branch 3 not taken.
 391611456 current_thd);
6550
6551
1/2
✓ Branch 0 taken 391609711 times.
✗ Branch 1 not taken.
 391611211 const type_conversion_status ret = save_in_field_inner(field, no_conversions);
6552
6553 /*
6554 If an error was raised during evaluation of the item,
6555 save_in_field_inner() might not notice and return TYPE_OK. Make
6556 sure that we return not OK if there was an error.
6557 */
6558
8/10
✓ Branch 0 taken 389039033 times.
✓ Branch 1 taken 2570678 times.
✓ Branch 2 taken 389039437 times.
✗ Branch 3 not taken.
✓ Branch 4 taken 389039354 times.
✗ Branch 5 not taken.
✓ Branch 6 taken 1484 times.
✓ Branch 7 taken 389037870 times.
✓ Branch 8 taken 1484 times.
✓ Branch 9 taken 391608548 times.
 391609711 if (ret == TYPE_OK && current_thd->is_error()) {
6559 1484 return TYPE_ERR_BAD_VALUE;
6560 }
6561 391608548 return ret;
6562 391610032 }
6563
6564 /*
6565 This implementation can lose str_value content, so if the
6566 Item uses str_value to store something, it should
6567 reimplement its ::save_in_field_inner() as Item_string, for example, does.
6568
6569 Note: all Item_XXX::val_str(str) methods must NOT rely on the fact that
6570 str != str_value. For example, see fix for bug #44743.
6571 */
6572
6573 144967712 type_conversion_status Item::save_in_field_inner(Field *field,
6574 bool no_conversions) {
6575 // Storing of arrays should be handled by specialized subclasses.
6576
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 144967956 times.
 144967712 assert(!returns_array());
6577
6578
2/2
✓ Branch 0 taken 96566846 times.
✓ Branch 1 taken 48400792 times.
 144967956 if (result_type() == STRING_RESULT) {
6579
1/2
✓ Branch 0 taken 96566907 times.
✗ Branch 1 not taken.
 96566846 const enum Type typ = type();
6580
6581
4/4
✓ Branch 0 taken 22887 times.
✓ Branch 1 taken 96544020 times.
✓ Branch 2 taken 2013 times.
✓ Branch 3 taken 20874 times.
 96566907 if (typ == FUNC_ITEM || typ == SUBSELECT_ITEM) {
6582 96546033 enum_field_types ft = data_type();
6583 // Avoid JSON dom/binary serialization to/from string
6584
2/2
✓ Branch 0 taken 442655 times.
✓ Branch 1 taken 96103482 times.
 96546137 if (ft == MYSQL_TYPE_JSON) {
6585
3/4
✓ Branch 0 taken 442478 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 22214 times.
✓ Branch 3 taken 420264 times.
 442655 if (field->type() == MYSQL_TYPE_JSON) {
6586 // Store the value in the JSON binary format.
6587 22214 Field_json *f = down_cast<Field_json *>(field);
6588 22214 Json_wrapper wr;
6589
3/4
✓ Branch 0 taken 22214 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 10 times.
✓ Branch 3 taken 22204 times.
 22214 if (val_json(&wr)) return TYPE_ERR_BAD_VALUE;
6590
6591
3/4
✓ Branch 0 taken 1058 times.
✓ Branch 1 taken 21146 times.
✓ Branch 2 taken 1058 times.
✗ Branch 3 not taken.
 22204 if (null_value) return set_field_to_null(field);
6592
6593
1/2
✓ Branch 0 taken 21146 times.
✗ Branch 1 not taken.
 21146 field->set_notnull();
6594
1/2
✓ Branch 0 taken 21146 times.
✗ Branch 1 not taken.
 21146 return f->store_json(&wr);
6595 22214 }
6596
6597
1/2
✓ Branch 0 taken 420204 times.
✗ Branch 1 not taken.
 420264 const enum_field_types field_type = field->type();
6598
6/6
✓ Branch 0 taken 283 times.
✓ Branch 1 taken 419999 times.
✓ Branch 2 taken 227 times.
✓ Branch 3 taken 56 times.
✓ Branch 4 taken 227 times.
✓ Branch 5 taken 420055 times.
 420204 if (is_temporal_type(field_type) && field_type != MYSQL_TYPE_YEAR) {
6599 MYSQL_TIME t;
6600 227 bool res = true;
6601
2/4
✓ Branch 0 taken 56 times.
✓ Branch 1 taken 171 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 227 switch (field_type) {
6602 56 case MYSQL_TYPE_TIME:
6603
1/2
✓ Branch 0 taken 56 times.
✗ Branch 1 not taken.
 56 res = get_time(&t);
6604 56 break;
6605 171 case MYSQL_TYPE_DATETIME:
6606 case MYSQL_TYPE_TIMESTAMP:
6607 case MYSQL_TYPE_DATE:
6608 case MYSQL_TYPE_NEWDATE:
6609
1/2
✓ Branch 0 taken 171 times.
✗ Branch 1 not taken.
 171 res = get_date(&t, 0);
6610 171 break;
6611 ✗ case MYSQL_TYPE_YEAR:
6612 ✗ assert(false);
6613 ✗ default:
6614 ✗ assert(false);
6615 }
6616
2/2
✓ Branch 0 taken 210 times.
✓ Branch 1 taken 17 times.
 227 if (res) {
6617 210 null_value = true;
6618
1/2
✓ Branch 0 taken 210 times.
✗ Branch 1 not taken.
 210 return set_field_to_null_with_conversions(field, no_conversions);
6619 }
6620
1/2
✓ Branch 0 taken 17 times.
✗ Branch 1 not taken.
 17 field->set_notnull();
6621
1/2
✓ Branch 0 taken 17 times.
✗ Branch 1 not taken.
 17 return field->store_time(&t);
6622 }
6623
3/4
✓ Branch 0 taken 419980 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 72 times.
✓ Branch 3 taken 419908 times.
 420055 if (field->type() == MYSQL_TYPE_NEWDECIMAL) {
6624 72 my_decimal decimal_value;
6625
1/2
✓ Branch 0 taken 72 times.
✗ Branch 1 not taken.
 72 my_decimal *value = val_decimal(&decimal_value);
6626
2/2
✓ Branch 0 taken 8 times.
✓ Branch 1 taken 64 times.
 72 if (null_value)
6627
1/2
✓ Branch 0 taken 8 times.
✗ Branch 1 not taken.
 8 return set_field_to_null_with_conversions(field, no_conversions);
6628
1/2
✓ Branch 0 taken 64 times.
✗ Branch 1 not taken.
 64 field->set_notnull();
6629
1/2
✓ Branch 0 taken 64 times.
✗ Branch 1 not taken.
 64 return field->store_decimal(value);
6630 72 }
6631
1/2
✓ Branch 0 taken 419880 times.
✗ Branch 1 not taken.
 419908 if (field->type() == MYSQL_TYPE_INT24 ||
6632
3/4
✓ Branch 0 taken 419824 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 419730 times.
✓ Branch 3 taken 94 times.
 419795 field->type() == MYSQL_TYPE_TINY ||
6633
3/4
✓ Branch 0 taken 419804 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 419694 times.
✓ Branch 3 taken 110 times.
 419730 field->type() == MYSQL_TYPE_SHORT ||
6634
7/8
✓ Branch 0 taken 419795 times.
✓ Branch 1 taken 85 times.
✓ Branch 2 taken 419706 times.
✗ Branch 3 not taken.
✓ Branch 4 taken 1925 times.
✓ Branch 5 taken 417781 times.
✓ Branch 6 taken 418179 times.
✓ Branch 7 taken 1816 times.
 841703 field->type() == MYSQL_TYPE_LONG ||
6635
3/4
✓ Branch 0 taken 1925 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 122 times.
✓ Branch 3 taken 1803 times.
 1925 field->type() == MYSQL_TYPE_LONGLONG) {
6636
1/2
✓ Branch 0 taken 418094 times.
✗ Branch 1 not taken.
 418179 longlong nr = val_int();
6637
2/2
✓ Branch 0 taken 125 times.
✓ Branch 1 taken 417969 times.
 418094 if (null_value)
6638
1/2
✓ Branch 0 taken 125 times.
✗ Branch 1 not taken.
 125 return set_field_to_null_with_conversions(field, no_conversions);
6639
1/2
✓ Branch 0 taken 418120 times.
✗ Branch 1 not taken.
 417969 field->set_notnull();
6640
1/2
✓ Branch 0 taken 418203 times.
✗ Branch 1 not taken.
 418120 return field->store(nr, unsigned_flag);
6641 }
6642
5/6
✓ Branch 0 taken 1803 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 1747 times.
✓ Branch 3 taken 56 times.
✓ Branch 4 taken 116 times.
✓ Branch 5 taken 1687 times.
 3563 if (field->type() == MYSQL_TYPE_FLOAT ||
6643
3/4
✓ Branch 0 taken 1747 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 60 times.
✓ Branch 3 taken 1687 times.
 1747 field->type() == MYSQL_TYPE_DOUBLE) {
6644
1/2
✓ Branch 0 taken 116 times.
✗ Branch 1 not taken.
 116 double nr = val_real();
6645
2/2
✓ Branch 0 taken 16 times.
✓ Branch 1 taken 100 times.
 116 if (null_value)
6646
1/2
✓ Branch 0 taken 16 times.
✗ Branch 1 not taken.
 16 return set_field_to_null_with_conversions(field, no_conversions);
6647
1/2
✓ Branch 0 taken 100 times.
✗ Branch 1 not taken.
 100 field->set_notnull();
6648
1/2
✓ Branch 0 taken 100 times.
✗ Branch 1 not taken.
 100 return field->store(nr);
6649 }
6650 }
6651 }
6652
6653 String *result;
6654 96126043 const CHARSET_INFO *cs = collation.collation;
6655 char buff[MAX_FIELD_WIDTH]; // Alloc buffer for small columns
6656 96126043 str_value.set_quick(buff, sizeof(buff), cs);
6657
1/2
✓ Branch 0 taken 96126677 times.
✗ Branch 1 not taken.
 96125955 result = val_str(&str_value);
6658
4/6
✓ Branch 0 taken 96126553 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 96126759 times.
✗ Branch 3 not taken.
✓ Branch 4 taken 169 times.
✓ Branch 5 taken 96126590 times.
 96126677 if (current_thd->is_error()) return TYPE_ERR_BAD_VALUE;
6659
2/2
✓ Branch 0 taken 9312821 times.
✓ Branch 1 taken 86813769 times.
 96126590 if (null_value) {
6660 9312821 str_value.set_quick(nullptr, 0, cs);
6661
1/2
✓ Branch 0 taken 9312821 times.
✗ Branch 1 not taken.
 9312821 return set_field_to_null_with_conversions(field, no_conversions);
6662 }
6663
6664 /* NOTE: If null_value == false, "result" must be not NULL. */
6665
6666
1/2
✓ Branch 0 taken 86813641 times.
✗ Branch 1 not taken.
 86813769 field->set_notnull();
6667 type_conversion_status error =
6668
1/2
✓ Branch 0 taken 86813250 times.
✗ Branch 1 not taken.
 86813202 field->store(result->ptr(), result->length(),
6669
3/4
✓ Branch 0 taken 86813202 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 2259 times.
✓ Branch 3 taken 86810943 times.
 86813641 field->type() == MYSQL_TYPE_JSON ? result->charset() : cs);
6670 86813250 str_value.set_quick(nullptr, 0, cs);
6671 86813379 return error;
6672 }
6673
6674
6/6
✓ Branch 0 taken 951534 times.
✓ Branch 1 taken 47449309 times.
✓ Branch 2 taken 4578 times.
✓ Branch 3 taken 946962 times.
✓ Branch 4 taken 4578 times.
✓ Branch 5 taken 48396271 times.
 48400792 if (result_type() == REAL_RESULT && field->result_type() == STRING_RESULT) {
6675 4578 double nr = val_real();
6676
2/2
✓ Branch 0 taken 12 times.
✓ Branch 1 taken 4566 times.
 4578 if (null_value)
6677 12 return set_field_to_null_with_conversions(field, no_conversions);
6678 4566 field->set_notnull();
6679 4566 return field->store(nr);
6680 }
6681
6682
2/2
✓ Branch 0 taken 946964 times.
✓ Branch 1 taken 47449357 times.
 48396271 if (result_type() == REAL_RESULT) {
6683 946964 double nr = val_real();
6684
2/2
✓ Branch 0 taken 5444 times.
✓ Branch 1 taken 941522 times.
 946966 if (null_value)
6685 5444 return set_field_to_null_with_conversions(field, no_conversions);
6686 941522 field->set_notnull();
6687 941523 return field->store(nr);
6688 }
6689
6690
2/2
✓ Branch 0 taken 1621113 times.
✓ Branch 1 taken 45828274 times.
 47449357 if (result_type() == DECIMAL_RESULT) {
6691 1621113 my_decimal decimal_value;
6692
1/2
✓ Branch 0 taken 1621113 times.
✗ Branch 1 not taken.
 1621113 my_decimal *value = val_decimal(&decimal_value);
6693
2/2
✓ Branch 0 taken 4532 times.
✓ Branch 1 taken 1616581 times.
 1621113 if (null_value)
6694
1/2
✓ Branch 0 taken 4532 times.
✗ Branch 1 not taken.
 4532 return set_field_to_null_with_conversions(field, no_conversions);
6695
1/2
✓ Branch 0 taken 1616581 times.
✗ Branch 1 not taken.
 1616581 field->set_notnull();
6696
1/2
✓ Branch 0 taken 1616581 times.
✗ Branch 1 not taken.
 1616581 return field->store_decimal(value);
6697 1621113 }
6698
6699 45828274 longlong nr = val_int();
6700
2/2
✓ Branch 0 taken 19937607 times.
✓ Branch 1 taken 25890632 times.
 45828239 if (null_value)
6701 19937607 return set_field_to_null_with_conversions(field, no_conversions);
6702 25890632 field->set_notnull();
6703 25890909 return field->store(nr, unsigned_flag);
6704 }
6705
6706 20644308 type_conversion_status Item_string::save_in_field_inner(Field *field, bool) {
6707 String *result;
6708 20644308 result = val_str(&str_value);
6709 20644431 return save_str_value_in_field(field, result);
6710 }
6711
6712 440 type_conversion_status Item_uint::save_in_field_inner(Field *field,
6713 bool no_conversions) {
6714 /* Item_int::save_in_field_inner handles both signed and unsigned. */
6715 440 return Item_int::save_in_field_inner(field, no_conversions);
6716 }
6717
6718 /**
6719 Store an int in a field
6720
6721 @param field The field where the int value is to be stored
6722 @param nr The value to store in field
6723 @param null_value True if the value to store is NULL, false otherwise
6724 @param unsigned_flag Whether or not the int value is signed or unsigned
6725
6726 @retval TYPE_OK Storing of value went fine without warnings or errors
6727 @retval !TYPE_OK Warning/error as indicated by type_conversion_status enum
6728 value
6729 */
6730 32430411 static type_conversion_status save_int_value_in_field(Field *field, longlong nr,
6731 bool null_value,
6732 bool unsigned_flag) {
6733 // TODO: call set_field_to_null_with_conversions below
6734
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 32430411 times.
 32430411 if (null_value) return set_field_to_null(field);
6735 32430411 field->set_notnull();
6736 32431440 return field->store(nr, unsigned_flag);
6737 }
6738
6739 /**
6740 Store this item's int-value in a field
6741
6742 @param field The field where the int value is to be stored
6743 @param no_conversions Only applies if the value to store is NULL
6744 (null_value is true) and NULL is not allowed
6745 in field. In that case: if no_coversion is
6746 true, do nothing and return with error
6747 TYPE_ERR_NULL_CONSTRAINT_VIOLATION. If
6748 no_coversion is false, the field's default
6749 value is stored if one exists. Otherwise an
6750 error is returned.
6751
6752 @retval TYPE_OK Storing of value went fine without warnings or errors
6753 @retval !TYPE_OK Warning/error as indicated by type_conversion_status enum
6754 value
6755 */
6756 32430333 type_conversion_status Item_int::save_in_field_inner(Field *field,
6757 bool no_conversions
6758 [[maybe_unused]]) {
6759 32430333 return save_int_value_in_field(field, val_int(), null_value, unsigned_flag);
6760 }
6761
6762 43 type_conversion_status Item_temporal::save_in_field_inner(Field *field, bool) {
6763 43 const enum_field_types field_type = field->type();
6764 43 longlong nr = is_temporal_type_with_time(field_type)
6765
1/2
✓ Branch 0 taken 43 times.
✗ Branch 1 not taken.
 43 ? val_temporal_with_round(field_type, field->decimals())
6766 ✗ : val_date_temporal();
6767 // TODO: call set_field_to_null_with_conversions below
6768
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 43 times.
 43 if (null_value) return set_field_to_null(field);
6769 43 field->set_notnull();
6770 43 return field->store_packed(nr);
6771 }
6772
6773 17740 type_conversion_status Item_decimal::save_in_field_inner(Field *field, bool) {
6774
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✓ Branch 1 taken 17740 times.
 17740 if (null_value) return set_field_to_null(field);
6775
6776 17740 field->set_notnull();
6777 17740 return field->store_decimal(&decimal_value);
6778 }
6779
6780 1035145 bool Item_int::eq(const Item *arg, bool) const {
6781 // No need to check for null value as integer constant can't be NULL
6782
6/6
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 1035145 if (arg->basic_const_item() && arg->type() == type()) {
6783 /*
6784 We need to cast off const to call val_int(). This should be OK for
6785 a basic constant.
6786 */
6787 324039 Item *item = const_cast<Item *>(arg);
6788
3/4
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✗ Branch 3 not taken.
 324039 return item->val_int() == value && item->unsigned_flag == unsigned_flag;
6789 }
6790 711110 return false;
6791 }
6792
6793 ✗ Item *Item_int_with_ref::clone_item() const {
6794 ✗ assert(ref->const_item());
6795 /*
6796 We need to evaluate the constant to make sure it works with
6797 parameter markers.
6798 */
6799 ✗ return (ref->unsigned_flag
6800 ✗ ? new Item_uint(ref->item_name, ref->val_int(), ref->max_length)
6801 ✗ : new Item_int(ref->item_name, ref->val_int(), ref->max_length));
6802 }
6803
6804 ✗ Item *Item_time_with_ref::clone_item() const {
6805 ✗ assert(ref->const_item());
6806 /*
6807 We need to evaluate the constant to make sure it works with
6808 parameter markers.
6809 */
6810 ✗ return new Item_temporal(MYSQL_TYPE_TIME, ref->item_name,
6811 ✗ ref->val_time_temporal(), ref->max_length);
6812 }
6813
6814 ✗ Item *Item_datetime_with_ref::clone_item() const {
6815 ✗ assert(ref->const_item());
6816 /*
6817 We need to evaluate the constant to make sure it works with
6818 parameter markers.
6819 */
6820 ✗ return new Item_temporal(MYSQL_TYPE_DATETIME, ref->item_name,
6821 ✗ ref->val_date_temporal(), ref->max_length);
6822 }
6823
6824 59 void Item_temporal_with_ref::print(const THD *, String *str,
6825 enum_query_type) const {
6826 char buff[MAX_DATE_STRING_REP_LENGTH];
6827 MYSQL_TIME ltime;
6828
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✗ Branch 1 not taken.
 59 TIME_from_longlong_packed(&ltime, data_type(), value);
6829
1/2
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✗ Branch 1 not taken.
 59 str->append("'");
6830
1/2
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✗ Branch 1 not taken.
 59 my_TIME_to_str(ltime, buff, decimals);
6831
1/2
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✗ Branch 1 not taken.
 59 str->append(buff);
6832
1/2
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✗ Branch 1 not taken.
 59 str->append('\'');
6833 59 }
6834
6835 1 Item_num *Item_uint::neg() {
6836
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✗ Branch 1 not taken.
✓ Branch 2 taken 1 times.
✗ Branch 3 not taken.
 1 Item_decimal *item = new Item_decimal(value, true);
6837 1 return item->neg();
6838 }
6839
6840 18537 static uint nr_of_decimals(const char *str, const char *end) {
6841 const char *decimal_point;
6842
6843 /* Find position for '.' */
6844 for (;;) {
6845
2/2
✓ Branch 0 taken 3 times.
✓ Branch 1 taken 18534 times.
 18537 if (str == end) return 0;
6846
4/4
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✓ Branch 1 taken 556 times.
✓ Branch 2 taken 82 times.
✓ Branch 3 taken 17896 times.
 18534 if (*str == 'e' || *str == 'E') return DECIMAL_NOT_SPECIFIED;
6847
2/2
✓ Branch 0 taken 4982 times.
✓ Branch 1 taken 12914 times.
 17896 if (*str++ == '.') break;
6848 }
6849 4982 decimal_point = str;
6850
4/4
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✓ Branch 1 taken 29 times.
✓ Branch 2 taken 31609 times.
✓ Branch 3 taken 4953 times.
 36591 for (; str < end && my_isdigit(system_charset_info, *str); str++)
6851 ;
6852
6/6
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✓ Branch 3 taken 3406 times.
✓ Branch 4 taken 1544 times.
✓ Branch 5 taken 3 times.
 4982 if (str < end && (*str == 'e' || *str == 'E')) return DECIMAL_NOT_SPECIFIED;
6853 /*
6854 QQ:
6855 The number of decimal digist in fact should be (str - decimal_point - 1).
6856 But it seems the result of nr_of_decimals() is never used!
6857
6858 In case of 'e' and 'E' nr_of_decimals returns DECIMAL_NOT_SPECIFIED.
6859 In case if there is no 'e' or 'E' parser code in sql_yacc.yy
6860 never calls Item_float::Item_float() - it creates Item_decimal instead.
6861
6862 The only piece of code where we call Item_float::Item_float(str, len)
6863 without having 'e' or 'E' is item_xmlfunc.cc, but this Item_float
6864 never appears in metadata itself. Changing the code to return
6865 (str - decimal_point - 1) does not make any changes in the test results.
6866
6867 This should be addressed somehow.
6868 Looks like a reminder from before real DECIMAL times.
6869 */
6870 32 return (uint)(str - decimal_point);
6871 }
6872
6873 /**
6874 This function is only called during parsing:
6875 - when parsing SQL query from sql_yacc.yy
6876 - when parsing XPath query from item_xmlfunc.cc
6877 We will signal an error if value is not a true double value (overflow):
6878 eng: Illegal %s '%-.192s' value found during parsing
6879
6880 Note: str_arg does not necessarily have to be a null terminated string,
6881 e.g. it is NOT when called from item_xmlfunc.cc or sql_yacc.yy.
6882 */
6883
6884 5623 void Item_float::init(const char *str_arg, uint length) {
6885 int error;
6886 const char *end_not_used;
6887
1/2
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✗ Branch 1 not taken.
 5623 value = my_strntod(&my_charset_bin, str_arg, length, &end_not_used, &error);
6888
2/2
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✓ Branch 1 taken 5617 times.
 5623 if (error) {
6889 char tmp[NAME_LEN + 1];
6890 6 snprintf(tmp, sizeof(tmp), "%.*s", length, str_arg);
6891
1/2
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✗ Branch 1 not taken.
 6 my_error(ER_ILLEGAL_VALUE_FOR_TYPE, MYF(0), "double", tmp);
6892 }
6893
1/2
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✗ Branch 1 not taken.
 5623 presentation.copy(str_arg, length);
6894
1/2
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✗ Branch 1 not taken.
 5623 item_name.copy(str_arg, length);
6895 5623 set_data_type(MYSQL_TYPE_DOUBLE);
6896 5623 decimals = (uint8)nr_of_decimals(str_arg, str_arg + length);
6897 5623 max_length = length;
6898 5623 fixed = true;
6899 5623 }
6900
6901 2982 type_conversion_status Item_float::save_in_field_inner(Field *field, bool) {
6902 2982 double nr = val_real();
6903 // TODO: call set_field_to_null_with_conversions below
6904
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2982 times.
 2982 if (null_value) return set_field_to_null(field);
6905 2982 field->set_notnull();
6906 2982 return field->store(nr);
6907 }
6908
6909 772 void Item_float::print(const THD *, String *str,
6910 enum_query_type query_type) const {
6911
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 772 times.
 772 if (query_type & QT_NORMALIZED_FORMAT) {
6912 ✗ str->append("?");
6913 320 return;
6914 }
6915
2/2
✓ Branch 0 taken 320 times.
✓ Branch 1 taken 452 times.
 772 if (presentation.ptr()) {
6916
1/2
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✗ Branch 1 not taken.
 320 str->append(presentation.ptr());
6917 320 return;
6918 }
6919 char buffer[20];
6920 452 String num(buffer, sizeof(buffer), &my_charset_bin);
6921
1/2
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✗ Branch 1 not taken.
 452 num.set_real(value, decimals, &my_charset_bin);
6922
1/2
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✗ Branch 1 not taken.
 452 str->append(num);
6923 452 }
6924
6925 /*
6926 hex item
6927 In string context this is a binary string.
6928 In number context this is a longlong value.
6929 */
6930
6931 821 bool Item_float::eq(const Item *arg, bool) const {
6932
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✗ Branch 3 not taken.
✓ Branch 4 taken 36 times.
✓ Branch 5 taken 785 times.
 821 if (arg->basic_const_item() && arg->type() == type()) {
6933 /*
6934 We need to cast off const to call val_int(). This should be OK for
6935 a basic constant.
6936 */
6937 36 Item *item = const_cast<Item *>(arg);
6938 36 return item->val_real() == value;
6939 }
6940 785 return false;
6941 }
6942
6943 199477 inline uint char_val(char X) {
6944
4/6
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✓ Branch 2 taken 130322 times.
✓ Branch 3 taken 69155 times.
✓ Branch 4 taken 69155 times.
✗ Branch 5 not taken.
 268632 return (uint)(X >= '0' && X <= '9'
6945 130322 ? X - '0'
6946
2/2
✓ Branch 0 taken 55900 times.
✓ Branch 1 taken 13255 times.
 268632 : X >= 'A' && X <= 'Z' ? X - 'A' + 10 : X - 'a' + 10);
6947 }
6948
6949 ✗ Item_hex_string::Item_hex_string() { hex_string_init("", 0); }
6950
6951 1 Item_hex_string::Item_hex_string(const char *str, uint str_length) {
6952
1/2
✓ Branch 0 taken 1 times.
✗ Branch 1 not taken.
 1 hex_string_init(str, str_length);
6953 1 }
6954
6955 20317 Item_hex_string::Item_hex_string(const POS &pos, const LEX_STRING &literal)
6956 20317 : super(pos) {
6957
1/2
✓ Branch 0 taken 20317 times.
✗ Branch 1 not taken.
 20317 hex_string_init(literal.str, literal.length);
6958 20317 }
6959
6960 31941 LEX_CSTRING Item_hex_string::make_hex_str(const char *str, size_t str_length) {
6961 31941 size_t max_length = (str_length + 1) / 2;
6962
2/4
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✗ Branch 1 not taken.
✓ Branch 2 taken 31941 times.
✗ Branch 3 not taken.
 31941 char *ptr = (char *)(*THR_MALLOC)->Alloc(max_length + 1);
6963
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 31941 times.
 31941 if (ptr == nullptr) return NULL_CSTR;
6964 31941 LEX_CSTRING ret = {ptr, max_length};
6965 31941 char *end = ptr + max_length;
6966
2/2
✓ Branch 0 taken 841 times.
✓ Branch 1 taken 31100 times.
 31941 if (max_length * 2 != str_length)
6967 841 *ptr++ = char_val(*str++); // Not even, assume 0 prefix
6968
2/2
✓ Branch 0 taken 99318 times.
✓ Branch 1 taken 31941 times.
 131259 while (ptr != end) {
6969 99318 *ptr++ = (char)(char_val(str[0]) * 16 + char_val(str[1]));
6970 99318 str += 2;
6971 }
6972 31941 *ptr = 0; // needed if printed in error message
6973 31941 return ret;
6974 }
6975
6976 241 uint Item_hex_string::decimal_precision() const {
6977
5/9
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✓ Branch 7 taken 8 times.
✓ Branch 8 taken 7 times.
 241 switch (max_length) {
6978 ✗ case 0:
6979 ✗ return count_digits(0U);
6980 205 case 1:
6981 205 return count_digits(0xFFU);
6982 14 case 2:
6983 14 return count_digits(0xFFFFU);
6984 ✗ case 3:
6985 ✗ return count_digits(0xFFFFFFU);
6986 7 case 4:
6987 7 return count_digits(0xFFFFFFFFU);
6988 ✗ case 5:
6989 ✗ return count_digits(0xFFFFFFFFFFU);
6990 ✗ case 6:
6991 ✗ return count_digits(0xFFFFFFFFFFFFU);
6992 8 case 7:
6993 8 return count_digits(0xFFFFFFFFFFFFFFU);
6994 7 default:
6995 // val_int() and val_decimal() look at the first eight bytes. Longer
6996 // values are truncated.
6997
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 7 times.
 7 assert(max_length >= 8);
6998 7 return count_digits(0xFFFFFFFFFFFFFFFFU);
6999 }
7000 }
7001
7002 20318 void Item_hex_string::hex_string_init(const char *str, uint str_length) {
7003
1/2
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✗ Branch 1 not taken.
 20318 LEX_CSTRING s = make_hex_str(str, str_length);
7004
1/2
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✗ Branch 1 not taken.
 20318 str_value.set(s.str, s.length, &my_charset_bin);
7005 20318 set_data_type(MYSQL_TYPE_VARCHAR);
7006 20318 max_length = s.length;
7007 20318 collation.set(&my_charset_bin, DERIVATION_COERCIBLE);
7008 20318 fixed = true;
7009 20318 unsigned_flag = true;
7010 20318 }
7011
7012 11851 longlong Item_hex_string::val_int() {
7013 // following assert is redundant, because fixed=1 assigned in constructor
7014
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 11851 times.
 11851 assert(fixed == 1);
7015 11851 const char *end = str_value.ptr() + str_value.length();
7016 const char *ptr;
7017
7018
2/2
✓ Branch 0 taken 12 times.
✓ Branch 1 taken 11839 times.
 11851 if (str_value.length() > sizeof(longlong)) {
7019 /*
7020 Too many bytes for longlong; lost bytes are [start, lost_end[ ; there is
7021 no loss of data in conversion only if they are all zeroes.
7022 */
7023 12 const char *lost_end = end - sizeof(longlong);
7024
1/2
✓ Branch 0 taken 12 times.
✗ Branch 1 not taken.
 12 for (ptr = str_value.ptr(); ptr < lost_end; ++ptr)
7025
1/2
✓ Branch 0 taken 12 times.
✗ Branch 1 not taken.
 12 if (*ptr != 0) {
7026 // Human-readable, size-limited printout of the hex:
7027 12 char errbuff[MYSQL_ERRMSG_SIZE], *errptr = errbuff;
7028 12 *errptr++ = 'x';
7029 12 *errptr++ = '\'';
7030
2/2
✓ Branch 0 taken 273 times.
✓ Branch 1 taken 12 times.
 285 for (ptr = str_value.ptr(); ptr < end; ++ptr) {
7031
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 273 times.
 273 if (errptr > errbuff + sizeof(errbuff) - 4) break;
7032 273 *errptr++ = _dig_vec_lower[((uchar)*ptr) >> 4];
7033 273 *errptr++ = _dig_vec_lower[((uchar)*ptr) & 0x0F];
7034 }
7035 12 *errptr++ = '\'';
7036 12 *errptr++ = 0;
7037
1/2
✓ Branch 0 taken 12 times.
✗ Branch 1 not taken.
 12 THD *thd = current_thd;
7038
2/4
✓ Branch 0 taken 12 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 12 times.
✗ Branch 3 not taken.
 12 push_warning_printf(
7039 thd, Sql_condition::SL_WARNING, ER_TRUNCATED_WRONG_VALUE,
7040 ER_THD(thd, ER_TRUNCATED_WRONG_VALUE), "BINARY", errbuff);
7041 12 return 0;
7042 }
7043 }
7044
7045 11839 ptr = end - str_value.length();
7046 11839 ulonglong value = 0;
7047
2/2
✓ Branch 0 taken 25461 times.
✓ Branch 1 taken 11839 times.
 37300 for (; ptr != end; ptr++) value = (value << 8) + (ulonglong)(uchar)*ptr;
7048 11839 return (longlong)value;
7049 }
7050
7051 53 my_decimal *Item_hex_string::val_decimal(my_decimal *decimal_value) {
7052 // following assert is redundant, because fixed=1 assigned in constructor
7053
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 53 times.
 53 assert(fixed == 1);
7054 53 ulonglong value = (ulonglong)val_int();
7055 53 int2my_decimal(E_DEC_FATAL_ERROR, value, true, decimal_value);
7056 53 return (decimal_value);
7057 }
7058
7059 23938 type_conversion_status Item_hex_string::save_in_field_inner(Field *field,
7060 bool) {
7061 23938 field->set_notnull();
7062
2/2
✓ Branch 0 taken 17306 times.
✓ Branch 1 taken 6632 times.
 23938 if (field->result_type() == STRING_RESULT)
7063 17306 return field->store(str_value.ptr(), str_value.length(),
7064 17306 collation.collation);
7065
7066 ulonglong nr;
7067 6632 size_t length = str_value.length();
7068
2/2
✓ Branch 0 taken 4 times.
✓ Branch 1 taken 6628 times.
 6632 if (!length) {
7069 4 field->reset();
7070 4 return TYPE_WARN_OUT_OF_RANGE;
7071 }
7072
2/2
✓ Branch 0 taken 678 times.
✓ Branch 1 taken 5950 times.
 6628 if (length > 8) {
7073
2/2
✓ Branch 0 taken 660 times.
✓ Branch 1 taken 18 times.
 678 nr = field->is_flag_set(UNSIGNED_FLAG) ? ULLONG_MAX : LLONG_MAX;
7074 678 goto warn;
7075 }
7076 5950 nr = (ulonglong)val_int();
7077
8/8
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✓ Branch 2 taken 61 times.
✓ Branch 3 taken 545 times.
✓ Branch 4 taken 13 times.
✓ Branch 5 taken 48 times.
✓ Branch 6 taken 13 times.
✓ Branch 7 taken 5937 times.
 5950 if ((length == 8) && !field->is_flag_set(UNSIGNED_FLAG) && (nr > LLONG_MAX)) {
7078 13 nr = LLONG_MAX;
7079 13 goto warn;
7080 }
7081 5937 return field->store((longlong)nr, true); // Assume hex numbers are unsigned
7082
7083 691 warn:
7084 691 const type_conversion_status res = field->store((longlong)nr, true);
7085
2/2
✓ Branch 0 taken 59 times.
✓ Branch 1 taken 632 times.
 691 if (res == TYPE_OK)
7086 59 field->set_warning(Sql_condition::SL_WARNING, ER_WARN_DATA_OUT_OF_RANGE, 1);
7087 691 return res;
7088 }
7089
7090 140 void Item_hex_string::print(const THD *, String *str,
7091 enum_query_type query_type) const {
7092
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 138 times.
 140 if (query_type & QT_NORMALIZED_FORMAT) {
7093
1/2
✓ Branch 0 taken 2 times.
✗ Branch 1 not taken.
 2 str->append("?");
7094 2 return;
7095 }
7096 138 const uchar *ptr = pointer_cast<const uchar *>(str_value.ptr());
7097 138 const uchar *end = ptr + str_value.length();
7098
1/2
✓ Branch 0 taken 138 times.
✗ Branch 1 not taken.
 138 str->append("0x");
7099
2/2
✓ Branch 0 taken 942 times.
✓ Branch 1 taken 138 times.
 1080 for (; ptr != end; ptr++) {
7100 942 str->append(_dig_vec_lower[*ptr >> 4]);
7101 942 str->append(_dig_vec_lower[*ptr & 0x0F]);
7102 }
7103 }
7104
7105 561 bool Item_hex_string::eq(const Item *item, bool binary_cmp) const {
7106
5/6
✓ Branch 0 taken 34 times.
✓ Branch 1 taken 527 times.
✓ Branch 2 taken 34 times.
✗ Branch 3 not taken.
✓ Branch 4 taken 34 times.
✓ Branch 5 taken 527 times.
 561 if (item->basic_const_item() && item->type() == type()) {
7107 // Should be OK for a basic constant.
7108 34 Item *arg = const_cast<Item *>(item);
7109 34 String str;
7110
3/6
✓ Branch 0 taken 34 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 34 times.
✗ Branch 3 not taken.
✓ Branch 4 taken 34 times.
✗ Branch 5 not taken.
 34 if (binary_cmp) return !stringcmp(&str_value, arg->val_str(&str));
7111 ✗ return !sortcmp(&str_value, arg->val_str(&str), collation.collation);
7112 34 }
7113 527 return false;
7114 }
7115
7116 79 Item *Item_hex_string::safe_charset_converter(THD *, const CHARSET_INFO *tocs) {
7117
1/2
✓ Branch 0 taken 79 times.
✗ Branch 1 not taken.
 79 String tmp, *str = val_str(&tmp);
7118
7119
2/4
✓ Branch 0 taken 79 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 79 times.
✗ Branch 3 not taken.
 79 auto conv = new Item_string(str->ptr(), str->length(), tocs);
7120
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 79 times.
 79 if (conv == nullptr) return nullptr;
7121 79 conv->mark_result_as_const();
7122 79 return conv;
7123 79 }
7124
7125 /*
7126 bin item.
7127 In string context this is a binary string.
7128 In number context this is a longlong value.
7129 */
7130
7131 6356 LEX_CSTRING Item_bin_string::make_bin_str(const char *str, size_t str_length) {
7132 6356 const char *end = str + str_length - 1;
7133 6356 uchar bits = 0;
7134 6356 uint power = 1;
7135
7136 6356 size_t max_length = (str_length + 7) >> 3;
7137
2/4
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✗ Branch 1 not taken.
✓ Branch 2 taken 6356 times.
✗ Branch 3 not taken.
 6356 char *ptr = (char *)(*THR_MALLOC)->Alloc(max_length + 1);
7138
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 6356 times.
 6356 if (ptr == nullptr) return NULL_CSTR;
7139
7140 6356 LEX_CSTRING ret{ptr, max_length};
7141
7142
2/2
✓ Branch 0 taken 6352 times.
✓ Branch 1 taken 4 times.
 6356 if (max_length > 0) {
7143 6352 ptr += max_length - 1;
7144 6352 ptr[1] = 0; // Set end null for string
7145
2/2
✓ Branch 0 taken 119527 times.
✓ Branch 1 taken 6352 times.
 125879 for (; end >= str; end--) {
7146
2/2
✓ Branch 0 taken 11467 times.
✓ Branch 1 taken 108060 times.
 119527 if (power == 256) {
7147 11467 power = 1;
7148 11467 *ptr-- = bits;
7149 11467 bits = 0;
7150 }
7151
2/2
✓ Branch 0 taken 62655 times.
✓ Branch 1 taken 56872 times.
 119527 if (*end == '1') bits |= power;
7152 119527 power <<= 1;
7153 }
7154 6352 *ptr = (char)bits;
7155 } else
7156 4 ptr[0] = 0;
7157
7158 6356 return ret;
7159 }
7160
7161 6338 void Item_bin_string::bin_string_init(const char *str, size_t str_length) {
7162
1/2
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✗ Branch 1 not taken.
 6338 LEX_CSTRING s = make_bin_str(str, str_length);
7163 6338 max_length = s.length;
7164
1/2
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✗ Branch 1 not taken.
 6338 str_value.set(s.str, s.length, &my_charset_bin);
7165 6338 collation.set(&my_charset_bin, DERIVATION_COERCIBLE);
7166 6338 fixed = true;
7167 6338 }
7168
7169 /**
7170 Pack data in buffer for sending.
7171 */
7172
7173 3612559 bool Item_null::send(Protocol *protocol, String *) {
7174 3612559 return protocol->store_null();
7175 }
7176
7177 706 Item_json::Item_json(unique_ptr_destroy_only<Json_wrapper> value,
7178 706 const Item_name_string &name)
7179 706 : m_value(std::move(value)) {
7180 706 set_data_type_json();
7181 706 item_name = name;
7182 706 }
7183
7184 2824 Item_json::~Item_json() = default;
7185
7186 175 void Item_json::print(const THD *, String *str, enum_query_type) const {
7187
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✗ Branch 1 not taken.
 175 str->append("json'");
7188
1/2
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✗ Branch 1 not taken.
 175 m_value->to_string(str, true, "", JsonDocumentDefaultDepthHandler);
7189
1/2
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✗ Branch 1 not taken.
 175 str->append("'");
7190 175 }
7191
7192 2136 bool Item_json::val_json(Json_wrapper *result) {
7193 2136 *result = *m_value;
7194 2136 return false;
7195 }
7196
7197 /*
7198 The functions below are rarely called, some of them are probably unreachable
7199 from SQL, because Item_json is used in a more limited way than other
7200 subclasses of Item_basic_constant. Most notably, there is no JSON literal
7201 syntax which gets translated into Item_json objects by the parser.
7202 */
7203
7204 3 double Item_json::val_real() { return m_value->coerce_real(item_name.ptr()); }
7205
7206 6 longlong Item_json::val_int() { return m_value->coerce_int(item_name.ptr()); }
7207
7208 4 String *Item_json::val_str(String *str) {
7209 4 str->length(0);
7210
2/4
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✓ Branch 3 taken 4 times.
 4 if (m_value->to_string(str, true, item_name.ptr(),
7211 JsonDocumentDefaultDepthHandler))
7212 ✗ return error_str();
7213 4 return str;
7214 }
7215
7216 3 my_decimal *Item_json::val_decimal(my_decimal *buf) {
7217 3 return m_value->coerce_decimal(buf, item_name.ptr());
7218 }
7219
7220 3 bool Item_json::get_date(MYSQL_TIME *ltime, my_time_flags_t) {
7221 3 return m_value->coerce_date(ltime, item_name.ptr());
7222 }
7223
7224 3 bool Item_json::get_time(MYSQL_TIME *ltime) {
7225 3 return m_value->coerce_time(ltime, item_name.ptr());
7226 }
7227
7228 3 Item *Item_json::clone_item() const {
7229
1/2
✓ Branch 0 taken 3 times.
✗ Branch 1 not taken.
 3 THD *const thd = current_thd;
7230 auto wr = make_unique_destroy_only<Json_wrapper>(thd->mem_root,
7231
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✗ Branch 3 not taken.
 3 m_value->clone_dom());
7232
1/2
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✓ Branch 1 taken 3 times.
 3 if (wr == nullptr) return nullptr;
7233
2/4
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✓ Branch 2 taken 3 times.
✗ Branch 3 not taken.
 3 return new Item_json(std::move(wr), item_name);
7234 3 }
7235
7236 /**
7237 This is only called from items that is not of type item_field.
7238 */
7239
7240 15113894 bool Item::send(Protocol *protocol, String *buffer) {
7241
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✓ Branch 8 taken 173598 times.
✓ Branch 9 taken 1141 times.
 15113894 switch (data_type()) {
7242 12203069 default:
7243 case MYSQL_TYPE_NULL:
7244 case MYSQL_TYPE_BOOL:
7245 case MYSQL_TYPE_INVALID:
7246 case MYSQL_TYPE_DECIMAL:
7247 case MYSQL_TYPE_ENUM:
7248 case MYSQL_TYPE_SET:
7249 case MYSQL_TYPE_TINY_BLOB:
7250 case MYSQL_TYPE_MEDIUM_BLOB:
7251 case MYSQL_TYPE_LONG_BLOB:
7252 case MYSQL_TYPE_BLOB:
7253 case MYSQL_TYPE_GEOMETRY:
7254 case MYSQL_TYPE_STRING:
7255 case MYSQL_TYPE_VAR_STRING:
7256 case MYSQL_TYPE_VARCHAR:
7257 case MYSQL_TYPE_BIT:
7258 case MYSQL_TYPE_NEWDECIMAL:
7259 case MYSQL_TYPE_JSON: {
7260 12203069 const String *res = val_str(buffer);
7261
2/2
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✓ Branch 1 taken 12203067 times.
 12203068 assert(null_value == (res == nullptr));
7262
2/2
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✓ Branch 1 taken 108059 times.
 12203067 if (res != nullptr)
7263 12095008 return protocol->store_string(res->ptr(), res->length(),
7264 12095011 res->charset());
7265 108059 break;
7266 }
7267 393 case MYSQL_TYPE_TINY: {
7268 393 longlong nr = val_int();
7269
2/2
✓ Branch 0 taken 225 times.
✓ Branch 1 taken 168 times.
 393 if (!null_value) return protocol->store_tiny(nr);
7270 168 break;
7271 }
7272 474 case MYSQL_TYPE_SHORT:
7273 case MYSQL_TYPE_YEAR: {
7274 474 longlong nr = val_int();
7275
2/2
✓ Branch 0 taken 286 times.
✓ Branch 1 taken 188 times.
 474 if (!null_value) return protocol->store_short(nr);
7276 188 break;
7277 }
7278 72839 case MYSQL_TYPE_INT24:
7279 case MYSQL_TYPE_LONG: {
7280 72839 longlong nr = val_int();
7281
2/2
✓ Branch 0 taken 47765 times.
✓ Branch 1 taken 25074 times.
 72839 if (!null_value) return protocol->store_long(nr);
7282 25074 break;
7283 }
7284 2550590 case MYSQL_TYPE_LONGLONG: {
7285 2550590 longlong nr = val_int();
7286
2/2
✓ Branch 0 taken 2198638 times.
✓ Branch 1 taken 351926 times.
 2550564 if (!null_value) return protocol->store_longlong(nr, unsigned_flag);
7287 351926 break;
7288 }
7289 217 case MYSQL_TYPE_FLOAT: {
7290 217 float nr = static_cast<float>(val_real());
7291
2/2
✓ Branch 0 taken 72 times.
✓ Branch 1 taken 145 times.
 217 if (!null_value) return protocol->store_float(nr, decimals, 0);
7292 145 break;
7293 }
7294 110956 case MYSQL_TYPE_DOUBLE: {
7295 110956 double nr = val_real();
7296
2/2
✓ Branch 0 taken 105476 times.
✓ Branch 1 taken 5480 times.
 110956 if (!null_value) return protocol->store_double(nr, decimals, 0);
7297 5480 break;
7298 }
7299 625 case MYSQL_TYPE_DATE: {
7300 MYSQL_TIME tm;
7301
1/2
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✗ Branch 1 not taken.
 625 get_date(&tm, TIME_FUZZY_DATE);
7302
3/4
✓ Branch 0 taken 366 times.
✓ Branch 1 taken 259 times.
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✗ Branch 3 not taken.
 625 if (!null_value) return protocol->store_date(tm);
7303 259 break;
7304 }
7305 173598 case MYSQL_TYPE_DATETIME:
7306 case MYSQL_TYPE_TIMESTAMP: {
7307 MYSQL_TIME tm;
7308
1/2
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 173598 get_date(&tm, TIME_FUZZY_DATE);
7309
3/4
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✓ Branch 2 taken 26610 times.
✗ Branch 3 not taken.
 173598 if (!null_value) return protocol->store_datetime(tm, decimals);
7310 146988 break;
7311 }
7312 1141 case MYSQL_TYPE_TIME: {
7313 MYSQL_TIME tm;
7314
1/2
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✗ Branch 1 not taken.
 1141 get_time(&tm);
7315
3/4
✓ Branch 0 taken 917 times.
✓ Branch 1 taken 222 times.
✓ Branch 2 taken 917 times.
✗ Branch 3 not taken.
 1139 if (!null_value) return protocol->store_time(tm, decimals);
7316 222 break;
7317 }
7318 }
7319
7320
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 638509 times.
 638509 assert(null_value);
7321 638509 return protocol->store_null();
7322 }
7323
7324 16897041 bool Item::update_null_value() {
7325 char buff[STRING_BUFFER_USUAL_SIZE];
7326 16897041 String str(buff, sizeof(buff), collation.collation);
7327
2/4
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✓ Branch 2 taken 16897041 times.
✗ Branch 3 not taken.
 33794082 return evaluate(current_thd, &str);
7328 16897041 }
7329
7330 /**
7331 Evaluate item, possibly using the supplied buffer
7332
7333 @param thd Thread context
7334 @param buffer Buffer, in case item needs a large one
7335
7336 @returns false if success, true if error
7337 */
7338
7339 16910977 bool Item::evaluate(THD *thd, String *buffer) {
7340
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✓ Branch 7 taken 216 times.
 16910977 switch (data_type()) {
7341 ✗ case MYSQL_TYPE_INVALID:
7342 default:
7343 ✗ assert(false);
7344 (void)val_str(buffer);
7345 break;
7346 457 case MYSQL_TYPE_JSON: {
7347 457 Json_wrapper wr;
7348
1/2
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✗ Branch 1 not taken.
 457 (void)val_json(&wr);
7349 457 } break;
7350 31058 case MYSQL_TYPE_NULL:
7351 case MYSQL_TYPE_DECIMAL:
7352 case MYSQL_TYPE_ENUM:
7353 case MYSQL_TYPE_SET:
7354 case MYSQL_TYPE_TINY_BLOB:
7355 case MYSQL_TYPE_MEDIUM_BLOB:
7356 case MYSQL_TYPE_LONG_BLOB:
7357 case MYSQL_TYPE_BLOB:
7358 case MYSQL_TYPE_GEOMETRY:
7359 case MYSQL_TYPE_STRING:
7360 case MYSQL_TYPE_VAR_STRING:
7361 case MYSQL_TYPE_VARCHAR:
7362 case MYSQL_TYPE_BIT: {
7363 31058 (void)val_str(buffer);
7364 31058 break;
7365 }
7366 16860162 case MYSQL_TYPE_BOOL:
7367 case MYSQL_TYPE_TINY:
7368 case MYSQL_TYPE_SHORT:
7369 case MYSQL_TYPE_YEAR:
7370 case MYSQL_TYPE_INT24:
7371 case MYSQL_TYPE_LONG:
7372 case MYSQL_TYPE_LONGLONG: {
7373 16860162 (void)val_int();
7374 16860164 break;
7375 }
7376 3471 case MYSQL_TYPE_NEWDECIMAL: {
7377 3471 my_decimal decimal_value;
7378
1/2
✓ Branch 0 taken 3471 times.
✗ Branch 1 not taken.
 3471 (void)val_decimal(&decimal_value);
7379 3471 break;
7380 3471 }
7381
7382 8015 case MYSQL_TYPE_FLOAT:
7383 case MYSQL_TYPE_DOUBLE: {
7384 8015 (void)val_real();
7385 8015 break;
7386 }
7387 7598 case MYSQL_TYPE_DATETIME:
7388 case MYSQL_TYPE_DATE:
7389 case MYSQL_TYPE_TIMESTAMP: {
7390 MYSQL_TIME tm;
7391
1/2
✓ Branch 0 taken 7598 times.
✗ Branch 1 not taken.
 7598 (void)get_date(&tm, TIME_FUZZY_DATE);
7392 7598 break;
7393 }
7394 216 case MYSQL_TYPE_TIME: {
7395 MYSQL_TIME tm;
7396
1/2
✓ Branch 0 taken 214 times.
✗ Branch 1 not taken.
 216 (void)get_time(&tm);
7397 214 break;
7398 }
7399 }
7400 16910977 const bool result = thd->is_error();
7401 // Convention: set NULL value indicator on error
7402
2/2
✓ Branch 0 taken 831 times.
✓ Branch 1 taken 16910146 times.
 16910977 if (result) null_value = true;
7403 16910977 return result;
7404 }
7405
7406 /**
7407 Check if an item is a constant one and can be cached.
7408
7409 @param [out] arg If != NULL <=> Cache this item.
7410
7411 @return true Go deeper in item tree.
7412 @return false Don't go deeper in item tree.
7413 */
7414
7415 10993529 bool Item::cache_const_expr_analyzer(uchar **arg) {
7416 10993529 cache_const_expr_arg *carg = (cache_const_expr_arg *)*arg;
7417
2/2
✓ Branch 0 taken 10979642 times.
✓ Branch 1 taken 13887 times.
 10993529 if (!carg->cache_item) {
7418 10979642 Item *item = real_item();
7419 /*
7420 Cache constant items unless it's a basic constant, a constant field,
7421 a subquery (they use their own cache),
7422 a ROW object (rollback logic can get messy),
7423 or it is already cached.
7424 */
7425
4/4
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 13708301 if (const_for_execution() &&
7426
3/4
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✓ Branch 1 taken 2578675 times.
✓ Branch 2 taken 149985 times.
✗ Branch 3 not taken.
 2728665 !(basic_const_item() || item->basic_const_item() ||
7427
4/4
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✓ Branch 1 taken 531 times.
✓ Branch 2 taken 147490 times.
✓ Branch 3 taken 1964 times.
 149985 item->type() == Item::FIELD_ITEM || item->type() == SUBSELECT_ITEM ||
7428
4/4
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✓ Branch 1 taken 402 times.
✓ Branch 2 taken 147075 times.
✓ Branch 3 taken 13 times.
 147490 item->type() == ROW_ITEM || item->type() == CACHE_ITEM ||
7429
2/2
✓ Branch 0 taken 145586 times.
✓ Branch 1 taken 1479 times.
 147075 item->type() == PARAM_ITEM))
7430 /*
7431 Note that we use cache_item as a flag (NULL vs non-NULL), but we
7432 are storing the pointer so that we can assert that we cache the
7433 correct item in Item::cache_const_expr_transformer().
7434 */
7435 145586 carg->cache_item = this;
7436 /*
7437 JSON functions can read JSON from strings or use SQL scalars by
7438 converting them to JSON scalars. Such conversion takes time and on
7439 repetitive calls result is significant performance penalty.
7440
7441 Check if such data can be cached:
7442 1) this item is constant
7443 2) this item is an arg to a function
7444 3) it's a source of JSON data
7445 4) this item's type isn't JSON so conversion will be required
7446 5) it's not cached already
7447
7448 Difference with the block above is that this one caches any const item,
7449 because the goal here is to avoid conversion, rather than re-evaluation.
7450 */
7451 10834050 else if (const_for_execution() && // 1
7452
5/6
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 13417142 carg->stack.elements > 0 &&
7453
2/2
✓ Branch 0 taken 2580577 times.
✓ Branch 1 taken 2505 times.
 2583079 carg->stack.head()->type() == FUNC_ITEM) // 2
7454 {
7455 2580575 Item_func *head = down_cast<Item_func *>(carg->stack.head());
7456 enum_const_item_cache what_cache;
7457
2/2
✓ Branch 0 taken 34 times.
✓ Branch 1 taken 599 times.
 2581211 if ((what_cache = head->can_cache_json_arg(this)) && // 3
7458
4/4
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✓ Branch 2 taken 34 times.
✓ Branch 3 taken 2580545 times.
 2581212 data_type() != MYSQL_TYPE_JSON && // 4
7459
1/2
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✗ Branch 1 not taken.
 34 item->type() != CACHE_ITEM) // 5
7460 {
7461 34 carg->cache_item = this;
7462 34 carg->cache_arg = what_cache;
7463 }
7464 }
7465 // Push only if we're going down the tree, so transformer will pop the item
7466 10979653 carg->stack.push_front(item);
7467 /*
7468 If this item will be cached, no need to explore items further down
7469 in the tree, but the transformer must be called, so return 'true'.
7470 If this item will not be cached, items further down in the tree
7471 must be explored, so return 'true'.
7472 */
7473 10979645 return true;
7474 }
7475 /*
7476 An item above in the tree is to be cached, so need to cache the present
7477 item, and no need to go down the tree.
7478 */
7479 13887 return false;
7480 }
7481
7482 80257 bool Item::can_be_substituted_for_gc(bool array) const {
7483
3/3
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✓ Branch 1 taken 30287 times.
✓ Branch 2 taken 22899 times.
 80257 switch (real_item()->type()) {
7484 27071 case FUNC_ITEM:
7485 case COND_ITEM:
7486 27071 return true;
7487 30287 case FIELD_ITEM:
7488 // Fields can be substituted with a generated column for a multi-valued
7489 // index defined on the field. Otherwise, for non-arrays, we don't
7490 // substitute fields with generated columns, since functional indexes
7491 // cannot be defined on a plain column, only on expressions.
7492 30287 return array;
7493 22899 default:
7494 22899 return false;
7495 }
7496 }
7497
7498 /**
7499 Set the maximum number of characters required by any of the items in args.
7500 */
7501 6752507 void Item::aggregate_char_length(Item **args, uint nitems) {
7502 6752507 uint32 char_length = 0;
7503 /*
7504 To account for character sets with different number of bytes per character,
7505 set char_length equal to max_length if the aggregated character set is
7506 binary to prevent truncation of data as some characters require more than
7507 one byte.
7508 */
7509 6752507 bool bin_charset = collation.collation == &my_charset_bin;
7510
2/2
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✓ Branch 1 taken 6752507 times.
 22187475 for (uint i = 0; i < nitems; i++)
7511
2/2
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✓ Branch 1 taken 15433702 times.
 30868670 char_length = max(char_length, bin_charset ? args[i]->max_length
7512
1/2
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✗ Branch 1 not taken.
 15433702 : args[i]->max_char_length());
7513
2/2
✓ Branch 0 taken 6528846 times.
✓ Branch 1 taken 223661 times.
 6752507 if (char_length * collation.collation->mbmaxlen > max_length)
7514 6528846 fix_char_length(char_length);
7515 6752507 }
7516
7517 /**
7518 Set max_length and decimals of function if function is floating point and
7519 result length/precision depends on argument ones.
7520
7521 @param item Argument array.
7522 @param nitems Number of arguments in the array.
7523 */
7524 195764 void Item::aggregate_float_properties(Item **item, uint nitems) {
7525
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✓ Branch 3 taken 195764 times.
 195764 assert(result_type() == REAL_RESULT);
7526 195764 uint32 length = 0;
7527 195764 uint8 decimals_cnt = 0;
7528 195764 uint32 maxl = 0;
7529
2/2
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✓ Branch 1 taken 195764 times.
 587204 for (uint i = 0; i < nitems; i++) {
7530
2/2
✓ Branch 0 taken 238905 times.
✓ Branch 1 taken 152535 times.
 391440 if (decimals_cnt != DECIMAL_NOT_SPECIFIED) {
7531 238905 decimals_cnt = max(decimals_cnt, item[i]->decimals);
7532 238905 length = max(length, (item[i]->max_length - item[i]->decimals));
7533 }
7534 391440 maxl = max(maxl, item[i]->max_length);
7535 }
7536
2/2
✓ Branch 0 taken 167 times.
✓ Branch 1 taken 195597 times.
 195764 if (decimals_cnt != DECIMAL_NOT_SPECIFIED) {
7537 167 maxl = length;
7538 167 length += decimals_cnt;
7539
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 167 times.
 167 if (length < maxl) // If previous operation gave overflow
7540 ✗ maxl = UINT_MAX32;
7541 else
7542 167 maxl = length;
7543 }
7544
7545 195764 this->max_length = maxl;
7546 195764 this->decimals = decimals_cnt;
7547 195764 }
7548
7549 /**
7550 Set precision and decimals of function when this depends on arguments'
7551 values for these quantities.
7552
7553 @param item Argument array.
7554 @param nitems Number of arguments in the array.
7555 */
7556 2032932 void Item::aggregate_decimal_properties(Item **item, uint nitems) {
7557
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✓ Branch 3 taken 2032932 times.
 2032932 assert(result_type() == DECIMAL_RESULT);
7558 2032932 int max_int_part = 0;
7559 2032932 uint8 decimal_cnt = 0;
7560
2/2
✓ Branch 0 taken 4219671 times.
✓ Branch 1 taken 2032932 times.
 6252603 for (uint i = 0; i < nitems; i++) {
7561 4219671 decimal_cnt = max(decimal_cnt, item[i]->decimals);
7562
1/2
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✗ Branch 1 not taken.
 4219671 max_int_part = max(max_int_part, item[i]->decimal_int_part());
7563 }
7564 2032932 int precision = min(max_int_part + decimal_cnt, DECIMAL_MAX_PRECISION);
7565
1/2
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✗ Branch 1 not taken.
 2032932 set_data_type_decimal(precision, decimal_cnt);
7566 2032932 }
7567
7568 /**
7569 Set fractional seconds precision for temporal functions.
7570
7571 @param item Argument array
7572 @param nitems Number of arguments in the array.
7573 */
7574 182859 void Item::aggregate_temporal_properties(Item **item, uint nitems) {
7575
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 182859 assert(result_type() == STRING_RESULT);
7576 182859 uint8 decimal_cnt = 0;
7577
7578
5/7
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 182859 switch (data_type()) {
7579 182609 case MYSQL_TYPE_DATETIME:
7580
2/2
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 547820 for (uint i = 0; i < nitems; i++)
7581
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✓ Branch 0 taken 365211 times.
✗ Branch 1 not taken.
 365211 decimal_cnt = max(decimal_cnt, uint8(item[i]->datetime_precision()));
7582 182609 decimal_cnt = min(decimal_cnt, uint8(DATETIME_MAX_DECIMALS));
7583 182609 set_data_type_datetime(decimal_cnt);
7584 182609 break;
7585
7586 75 case MYSQL_TYPE_TIMESTAMP:
7587
2/2
✓ Branch 0 taken 149 times.
✓ Branch 1 taken 75 times.
 224 for (uint i = 0; i < nitems; i++)
7588
1/2
✓ Branch 0 taken 149 times.
✗ Branch 1 not taken.
 149 decimal_cnt = max(decimal_cnt, uint8(item[i]->datetime_precision()));
7589 75 decimal_cnt = min(decimal_cnt, uint8(DATETIME_MAX_DECIMALS));
7590 75 set_data_type_timestamp(decimal_cnt);
7591 75 break;
7592
7593 ✗ case MYSQL_TYPE_NEWDATE:
7594 ✗ assert(false);
7595 set_data_type_date();
7596 set_data_type(MYSQL_TYPE_NEWDATE);
7597 break;
7598
7599 93 case MYSQL_TYPE_DATE:
7600 93 set_data_type_date();
7601 93 break;
7602
7603 80 case MYSQL_TYPE_TIME:
7604
2/2
✓ Branch 0 taken 158 times.
✓ Branch 1 taken 80 times.
 238 for (uint i = 0; i < nitems; i++)
7605
1/2
✓ Branch 0 taken 158 times.
✗ Branch 1 not taken.
 158 decimal_cnt = max(decimal_cnt, uint8(item[i]->time_precision()));
7606 80 decimal_cnt = min(decimal_cnt, uint8(DATETIME_MAX_DECIMALS));
7607 80 set_data_type_time(decimal_cnt);
7608 80 break;
7609
7610 2 case MYSQL_TYPE_YEAR:
7611
1/2
✓ Branch 0 taken 2 times.
✗ Branch 1 not taken.
 2 set_data_type_year();
7612 2 break;
7613
7614 ✗ default:
7615 ✗ assert(false); /* purecov: inspected */
7616 }
7617 182859 }
7618
7619 /**
7620 Aggregate string properties (character set, collation and maximum length) for
7621 string function.
7622
7623 @param name Name of function
7624 @param items Argument array.
7625 @param nitems Number of arguments.
7626
7627 @retval False on success, true on error.
7628 */
7629 4859516 bool Item::aggregate_string_properties(const char *name, Item **items,
7630 uint nitems) {
7631
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4859516 times.
 4859516 assert(result_type() == STRING_RESULT);
7632
2/2
✓ Branch 0 taken 11 times.
✓ Branch 1 taken 4859505 times.
 4859516 if (agg_item_charsets_for_string_result(collation, name, items, nitems, 1))
7633 11 return true;
7634
2/2
✓ Branch 0 taken 182859 times.
✓ Branch 1 taken 4676646 times.
 4859505 if (is_temporal_type(data_type())) {
7635 /*
7636 aggregate_temporal_properties() will set collation to numeric, causing
7637 the character set to be explicitly set to latin1, which may not match the
7638 aggregated character set. The collation must therefore be restored after
7639 the temporal properties have been computed.
7640 */
7641 182859 auto aggregated_collation = collation;
7642
1/2
✓ Branch 0 taken 182859 times.
✗ Branch 1 not taken.
 182859 aggregate_temporal_properties(items, nitems);
7643 182859 collation.set(aggregated_collation);
7644 /*
7645 Set max_length again as the aggregated character set may have different
7646 number of bytes per character than latin1.
7647 */
7648 182859 fix_char_length(max_length);
7649 } else
7650 4676646 decimals = min(decimals, uint8(DECIMAL_NOT_SPECIFIED));
7651 4859505 aggregate_char_length(items, nitems);
7652
7653 /*
7654 If the resulting data type is a fixed length character or binary string
7655 and the result maximum length in characters is longer than the MySQL
7656 maximum CHAR/BINARY size, convert to a variable-sized type.
7657 */
7658
3/4
✓ Branch 0 taken 304 times.
✓ Branch 1 taken 4859201 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 4859505 times.
 4859809 if (data_type() == MYSQL_TYPE_STRING &&
7659
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 304 times.
 304 max_char_length() > MAX_FIELD_CHARLENGTH)
7660 ✗ set_data_type(MYSQL_TYPE_VARCHAR);
7661
7662 4859505 return false;
7663 }
7664
7665 /**
7666 This function is used to resolve type for numeric result type of CASE,
7667 COALESCE, IF and LEAD/LAG. COALESCE is a CASE abbreviation according to the
7668 standard.
7669
7670 @param result_type The desired result type
7671 @param item The arguments of func
7672 @param nitems The number of arguments
7673 */
7674 3926137 void Item::aggregate_num_type(Item_result result_type, Item **item,
7675 uint nitems) {
7676 3926137 collation.set_numeric();
7677
3/4
✓ Branch 0 taken 2032932 times.
✓ Branch 1 taken 203 times.
✓ Branch 2 taken 1893002 times.
✗ Branch 3 not taken.
 3926137 switch (result_type) {
7678 2032932 case DECIMAL_RESULT:
7679 2032932 aggregate_decimal_properties(item, nitems);
7680 2032932 break;
7681 203 case REAL_RESULT:
7682 203 aggregate_float_properties(item, nitems);
7683 203 break;
7684 1893002 case INT_RESULT:
7685 case STRING_RESULT:
7686 1893002 aggregate_char_length(item, nitems);
7687 1893002 decimals = 0;
7688 1893002 break;
7689 ✗ case ROW_RESULT:
7690 default:
7691 ✗ assert(0);
7692 }
7693 3926137 }
7694
7695 /**
7696 Cache item if needed.
7697
7698 @param arg Descriptor of what and how to cache @see cache_const_expr_arg
7699
7700 @return cache if cache needed.
7701 @return this otherwise.
7702 */
7703
7704 10979614 Item *Item::cache_const_expr_transformer(uchar *arg) {
7705 10979614 cache_const_expr_arg *carg = (cache_const_expr_arg *)arg;
7706 10979614 carg->stack.pop();
7707
2/2
✓ Branch 0 taken 145620 times.
✓ Branch 1 taken 10834023 times.
 10979643 if (carg->cache_item) // Item is to be cached, note that it is used as a flag
7708 {
7709
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 145620 times.
 145620 assert(carg->cache_item == this);
7710 Item_cache *cache;
7711 /*
7712 Flag applies to present item, must reset it so it does not affect
7713 the parent item.
7714 */
7715 145620 carg->cache_item = nullptr;
7716 // Cache arg of a JSON function to avoid repetitive conversion
7717
2/2
✓ Branch 0 taken 34 times.
✓ Branch 1 taken 145586 times.
 145620 if (carg->cache_arg != CACHE_NONE) {
7718 34 Item *itm = this;
7719 34 Item_func *caller = down_cast<Item_func *>(carg->stack.head());
7720 34 String buf;
7721 34 Json_wrapper wr;
7722 34 enum_const_item_cache what_cache = carg->cache_arg;
7723
7724 34 carg->cache_arg = CACHE_NONE;
7725
2/2
✓ Branch 0 taken 21 times.
✓ Branch 1 taken 13 times.
 34 if (what_cache == CACHE_JSON_VALUE) {
7726 // Cache parse result of JSON string
7727
6/8
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✓ Branch 2 taken 21 times.
✗ Branch 3 not taken.
✓ Branch 4 taken 20 times.
✓ Branch 5 taken 1 times.
✓ Branch 6 taken 1 times.
✓ Branch 7 taken 20 times.
 41 if (get_json_wrapper(&itm, 0, &buf, caller->func_name(), &wr) ||
7728
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 20 times.
 20 null_value) {
7729
3/6
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✗ Branch 1 not taken.
✓ Branch 2 taken 1 times.
✗ Branch 3 not taken.
✓ Branch 4 taken 1 times.
✗ Branch 5 not taken.
 1 return current_thd->is_error() ? nullptr : this;
7730 }
7731 } else {
7732 // Cache SQL scalar converted to JSON
7733
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 13 times.
 13 assert(what_cache == CACHE_JSON_ATOM);
7734 13 String conv_buf;
7735
2/4
✓ Branch 0 taken 13 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 13 times.
✗ Branch 3 not taken.
 13 if (get_json_atom_wrapper(&itm, 0, caller->func_name(), &buf, &conv_buf,
7736
3/4
✓ Branch 0 taken 13 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 2 times.
✓ Branch 3 taken 11 times.
 26 &wr, nullptr, true) ||
7737
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 11 times.
 13 null_value) {
7738
3/6
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✗ Branch 1 not taken.
✓ Branch 2 taken 2 times.
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✗ Branch 4 not taken.
✓ Branch 5 taken 2 times.
 2 return current_thd->is_error() ? nullptr : this;
7739 }
7740
2/2
✓ Branch 0 taken 11 times.
✓ Branch 1 taken 2 times.
 13 }
7741 // Should've been checked at get_*_wrapper()
7742
2/4
✓ Branch 0 taken 31 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 31 times.
 31 assert(wr.type() != enum_json_type::J_ERROR);
7743
1/2
✓ Branch 0 taken 31 times.
✗ Branch 1 not taken.
 62 Item_cache_json *jcache = new Item_cache_json();
7744
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 31 times.
 31 if (!jcache) return nullptr;
7745
1/2
✓ Branch 0 taken 31 times.
✗ Branch 1 not taken.
 31 jcache->setup(this);
7746
1/2
✓ Branch 0 taken 31 times.
✗ Branch 1 not taken.
 31 jcache->store_value(this, &wr);
7747 31 cache = jcache;
7748
4/4
✓ Branch 0 taken 31 times.
✓ Branch 1 taken 3 times.
✓ Branch 2 taken 31 times.
✓ Branch 3 taken 3 times.
 37 } else {
7749 145586 cache = Item_cache::get_cache(this);
7750
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 145586 times.
 145586 if (!cache) return nullptr;
7751 145586 cache->setup(this);
7752 145586 cache->store(this);
7753 }
7754 /*
7755 This item is cached - for subqueries this effectively means that they
7756 are optimized away.
7757 */
7758 145617 mark_subqueries_optimized_away();
7759 145617 return cache;
7760 }
7761 10834023 return this;
7762 }
7763
7764 445445542 bool Item_field::send(Protocol *protocol, String *) {
7765 445445542 return protocol->store_field(field);
7766 }
7767
7768 /**
7769 Add the field to the select list and substitute it for the reference to
7770 the field.
7771
7772 @details
7773 If the field doesn't belong to the table being inserted into then it is
7774 added to the select list, pointer to it is stored in the ref_item_array
7775 of the select and the field itself is substituted for the Item_ref object.
7776 This is done in order to get correct values from update fields that
7777 belongs to the SELECT part in the INSERT .. SELECT .. ON DUPLICATE KEY
7778 UPDATE statement.
7779
7780 @retval nullptr if an error occurred
7781 @retval ref if all conditions are met
7782 @retval this field otherwise
7783 */
7784
7785 228 Item *Item_field::update_value_transformer(uchar *select_arg) {
7786 228 Query_block *select = pointer_cast<Query_block *>(select_arg);
7787
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 228 times.
 228 assert(fixed);
7788
7789
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 228 times.
 228 assert((table_ref == select->context.table_list) ==
7790 (field->table == select->context.table_list->table));
7791
4/4
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✓ Branch 1 taken 113 times.
✓ Branch 2 taken 112 times.
✓ Branch 3 taken 116 times.
 343 if (field->table != select->context.table_list->table &&
7792
2/2
✓ Branch 0 taken 112 times.
✓ Branch 1 taken 3 times.
 115 type() != Item::TRIGGER_FIELD_ITEM) {
7793 112 Item **tmp = select->add_hidden_item(this);
7794
2/4
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✗ Branch 1 not taken.
✓ Branch 2 taken 112 times.
✗ Branch 3 not taken.
 112 return new Item_ref(&select->context, tmp, db_name, table_name, field_name);
7795 }
7796 116 return this;
7797 }
7798
7799 5193429 void Item_field::print(const THD *thd, String *str,
7800 enum_query_type query_type) const {
7801
6/6
✓ Branch 0 taken 5176326 times.
✓ Branch 1 taken 17103 times.
✓ Branch 2 taken 198 times.
✓ Branch 3 taken 5176128 times.
✓ Branch 4 taken 198 times.
✓ Branch 5 taken 5193231 times.
 5193429 if (field && field->is_field_for_functional_index()) {
7802 198 field->gcol_info->expr_item->print(thd, str, query_type);
7803 198 return;
7804 }
7805
7806
6/6
✓ Branch 0 taken 5176129 times.
✓ Branch 1 taken 17102 times.
✓ Branch 2 taken 5175521 times.
✓ Branch 3 taken 608 times.
✓ Branch 4 taken 1980 times.
✓ Branch 5 taken 5173541 times.
 5193231 if (field && field->table && field->table->const_table &&
7807
2/2
✓ Branch 0 taken 1921 times.
✓ Branch 1 taken 59 times.
 1980 !(query_type & QT_NO_DATA_EXPANSION)) {
7808 char buff[MAX_FIELD_WIDTH];
7809 1921 String tmp(buff, sizeof(buff), str->charset());
7810
1/2
✓ Branch 0 taken 1921 times.
✗ Branch 1 not taken.
 1921 field->val_str(&tmp);
7811
3/4
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✗ Branch 1 not taken.
✓ Branch 2 taken 881 times.
✓ Branch 3 taken 1040 times.
 1921 if (field->is_null())
7812
1/2
✓ Branch 0 taken 881 times.
✗ Branch 1 not taken.
 881 str->append("NULL");
7813 else {
7814
1/2
✓ Branch 0 taken 1040 times.
✗ Branch 1 not taken.
 1040 str->append('\'');
7815
1/2
✓ Branch 0 taken 1040 times.
✗ Branch 1 not taken.
 1040 str->append(tmp);
7816
1/2
✓ Branch 0 taken 1040 times.
✗ Branch 1 not taken.
 1040 str->append('\'');
7817 }
7818 1921 return;
7819 1921 }
7820 5191310 Item_ident::print(thd, str, query_type);
7821 }
7822
7823 /**
7824 Calculate condition filtering effect for "WHERE field", which
7825 implicitly means "WHERE field <> 0". The filtering effect is
7826 therefore identical to that of Item_func_ne.
7827 */
7828 ✗ float Item_field::get_filtering_effect(THD *, table_map filter_for_table,
7829 table_map,
7830 const MY_BITMAP *fields_to_ignore,
7831 double rows_in_table) {
7832 ✗ if (used_tables() != filter_for_table ||
7833 ✗ bitmap_is_set(fields_to_ignore, field->field_index()))
7834 ✗ return COND_FILTER_ALLPASS;
7835
7836 ✗ return 1.0f - get_cond_filter_default_probability(rows_in_table,
7837 ✗ COND_FILTER_EQUALITY);
7838 }
7839
7840 178998627 float Item_field::get_cond_filter_default_probability(
7841 double max_distinct_values, float default_filter) const {
7842
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 178998627 times.
 178998627 assert(max_distinct_values >= 1.0);
7843
7844 // Some field types have a limited number of possible values
7845
3/3
✓ Branch 0 taken 788138 times.
✓ Branch 1 taken 2870 times.
✓ Branch 2 taken 178207662 times.
 178998627 switch (field->real_type()) {
7846 788138 case MYSQL_TYPE_ENUM: {
7847 // ENUM can only have the values defined in the typelib
7848 788138 const uint enum_values = static_cast<Field_enum *>(field)->typelib->count;
7849 788138 max_distinct_values =
7850 788138 min(static_cast<double>(enum_values), max_distinct_values);
7851 788138 break;
7852 }
7853 2870 case MYSQL_TYPE_BIT: {
7854 // BIT(N) can have no more than 2^N distinct values
7855 2870 const uint bits = static_cast<Field_bit *>(field)->field_length;
7856 2870 const double combos = pow(2.0, (int)bits);
7857 2870 max_distinct_values = min(combos, max_distinct_values);
7858 2880 break;
7859 }
7860 178207662 default:
7861 178207662 break;
7862 }
7863 178998680 return max(static_cast<float>(1 / max_distinct_values), default_filter);
7864 }
7865
7866 4610691 Item_ref::Item_ref(Name_resolution_context *context_arg, Item **item,
7867 const char *db_name_arg, const char *table_name_arg,
7868 4610691 const char *field_name_arg, bool alias_of_expr_arg)
7869 : Item_ident(context_arg, db_name_arg, table_name_arg, field_name_arg),
7870 4610691 ref(item) {
7871 4610691 m_alias_of_expr = alias_of_expr_arg;
7872 /*
7873 This constructor used to create some internals references over fixed items
7874 */
7875
6/8
✓ Branch 0 taken 4610570 times.
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✓ Branch 2 taken 4610487 times.
✓ Branch 3 taken 83 times.
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✗ Branch 5 not taken.
✓ Branch 6 taken 4610487 times.
✗ Branch 7 not taken.
 4610691 if (ref && *ref && (*ref)->fixed) set_properties();
7876 4610691 }
7877
7878 8228 Item_ref::Item_ref(Name_resolution_context *context_arg, Item **item,
7879 8228 const char *field_name_arg)
7880 8228 : Item_ident(context_arg, "", "", field_name_arg), ref(item) {
7881
2/4
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✗ Branch 1 not taken.
✓ Branch 2 taken 8228 times.
✗ Branch 3 not taken.
 8228 assert(ref && *ref);
7882
2/4
✓ Branch 0 taken 8228 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 8228 times.
✗ Branch 3 not taken.
 8228 if ((*ref)->fixed) set_properties();
7883 8228 }
7884
7885 /**
7886 Resolve the name of a reference to a column reference.
7887
7888 The method resolves the column reference represented by 'this' as a column
7889 present in one of: GROUP BY clause, SELECT clause, outer queries. It is
7890 used typically for columns in the HAVING clause which are not under
7891 aggregate functions.
7892
7893 POSTCONDITION @n
7894 Item_ref::ref is 0 or points to a valid item.
7895
7896 @note
7897 The name resolution algorithm used is (where [T_j] is an optional table
7898 name that qualifies the column name):
7899
7900 @code
7901 resolve_extended([T_j].col_ref_i)
7902 {
7903 Search for a column or derived column named col_ref_i [in table T_j]
7904 in the SELECT and GROUP clauses of Q.
7905
7906 if such a column is NOT found AND // Lookup in outer queries.
7907 there are outer queries
7908 {
7909 for each outer query Q_k beginning from the inner-most one
7910 {
7911 Search for a column or derived column named col_ref_i
7912 [in table T_j] in the SELECT and GROUP clauses of Q_k.
7913
7914 if such a column is not found AND
7915 - Q_k is not a group query AND
7916 - Q_k is not inside an aggregate function
7917 OR
7918 - Q_(k-1) is not in a HAVING or SELECT clause of Q_k
7919 {
7920 search for a column or derived column named col_ref_i
7921 [in table T_j] in the FROM clause of Q_k;
7922 }
7923 }
7924 }
7925 }
7926 @endcode
7927 @n
7928 This procedure treats GROUP BY and SELECT clauses as one namespace for
7929 column references in HAVING. Notice that compared to
7930 Item_field::fix_fields, here we first search the SELECT and GROUP BY
7931 clauses, and then we search the FROM clause.
7932
7933 @param[in] thd current thread
7934 @param[in,out] reference view column if this item was resolved to a
7935 view column
7936
7937 @todo
7938 Here we could first find the field anyway, and then test this
7939 condition, so that we can give a better error message -
7940 ER_WRONG_FIELD_WITH_GROUP, instead of the less informative
7941 ER_BAD_FIELD_ERROR which we produce now.
7942
7943 @retval
7944 true if error
7945 @retval
7946 false on success
7947 */
7948
7949 1290 bool Item_ref::fix_fields(THD *thd, Item **reference) {
7950
1/2
✓ Branch 0 taken 1290 times.
✗ Branch 1 not taken.
 1290 DBUG_TRACE;
7951
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1290 times.
 1290 assert(fixed == 0);
7952
7953 Internal_error_handler_holder<View_error_handler, TABLE_LIST> view_handler(
7954
1/2
✓ Branch 0 taken 1290 times.
✗ Branch 1 not taken.
 1290 thd, context->view_error_handler, context->view_error_handler_arg);
7955
7956
3/4
✓ Branch 0 taken 204 times.
✓ Branch 1 taken 1086 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 204 times.
 1290 if (!ref || ref == not_found_item) {
7957
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1086 times.
 1086 assert(context->query_block == thd->lex->current_query_block());
7958 1086 if (!(ref =
7959
3/4
✓ Branch 0 taken 1086 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 3 times.
✓ Branch 3 taken 1083 times.
 1086 resolve_ref_in_select_and_group(thd, this, context->query_block)))
7960 3 goto error; /* Some error occurred (e.g. ambiguous names). */
7961
7962
2/2
✓ Branch 0 taken 88 times.
✓ Branch 1 taken 995 times.
 1083 if (ref == not_found_item) /* This reference was not resolved. */
7963 {
7964 88 Name_resolution_context *last_checked_context = context;
7965 88 Name_resolution_context *outer_context = context->outer_context;
7966 Field *from_field;
7967 88 ref = nullptr;
7968
7969
2/2
✓ Branch 0 taken 9 times.
✓ Branch 1 taken 79 times.
 88 if (!outer_context) {
7970 /* The current reference cannot be resolved in this query. */
7971
1/2
✓ Branch 0 taken 9 times.
✗ Branch 1 not taken.
 9 my_error(ER_BAD_FIELD_ERROR, MYF(0), this->full_name(),
7972
2/4
✓ Branch 0 taken 9 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 9 times.
✗ Branch 3 not taken.
 9 current_thd->where);
7973 9 goto error;
7974 }
7975
7976 /*
7977 If there is an outer context (select), try to
7978 resolve this reference in the outer select(s).
7979
7980 We treat each subselect as a separate namespace, so that different
7981 subselects may contain columns with the same names. The subselects are
7982 searched starting from the innermost.
7983 */
7984 79 from_field = not_found_field;
7985
7986 79 Query_block *cur_query_block = context->query_block;
7987
7988 do {
7989 91 Query_block *select = outer_context->query_block;
7990 91 last_checked_context = outer_context;
7991 91 Query_expression *cur_query_expression = nullptr;
7992 91 enum_parsing_context place = CTX_NONE;
7993
7994 // See comments and similar loop in Item_field::fix_outer_field()
7995 while (true) {
7996
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 127 times.
 127 if (!cur_query_block) goto loop;
7997
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 127 times.
 127 assert(cur_query_block != select);
7998 127 cur_query_expression = cur_query_block->master_query_expression();
7999
2/2
✓ Branch 0 taken 91 times.
✓ Branch 1 taken 36 times.
 127 if (cur_query_expression->outer_query_block() == select) break;
8000
1/2
✓ Branch 0 taken 36 times.
✗ Branch 1 not taken.
 36 cur_query_expression->accumulate_used_tables(OUTER_REF_TABLE_BIT);
8001 36 cur_query_block = cur_query_expression->outer_query_block();
8002 }
8003
8004
1/2
✓ Branch 0 taken 91 times.
✗ Branch 1 not taken.
 91 place = cur_query_expression->place();
8005
8006
3/4
✓ Branch 0 taken 8 times.
✓ Branch 1 taken 83 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 8 times.
 91 if (place == CTX_DERIVED && select->end_lateral_table == nullptr)
8007 ✗ goto loop;
8008
8009 /* Search in the SELECT and GROUP lists of the outer select. */
8010
4/4
✓ Branch 0 taken 61 times.
✓ Branch 1 taken 30 times.
✓ Branch 2 taken 61 times.
✓ Branch 3 taken 30 times.
 152 if (select_alias_referencable(place) &&
8011
1/2
✓ Branch 0 taken 61 times.
✗ Branch 1 not taken.
 61 outer_context->resolve_in_select_list) {
8012
2/4
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✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 61 times.
 61 if (!(ref = resolve_ref_in_select_and_group(thd, this, select)))
8013 ✗ goto error; /* Some error occurred (e.g. ambiguous names). */
8014
2/2
✓ Branch 0 taken 36 times.
✓ Branch 1 taken 25 times.
 61 if (ref != not_found_item) {
8015
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 36 times.
 36 assert((*ref)->fixed);
8016
2/4
✓ Branch 0 taken 36 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 36 times.
✗ Branch 3 not taken.
 36 cur_query_expression->accumulate_used_tables((*ref)->used_tables());
8017 36 break;
8018 }
8019 /*
8020 Set ref to 0 to ensure that we get an error in case we replaced
8021 this item with another item and still use this item in some
8022 other place of the parse tree.
8023 */
8024 25 ref = nullptr;
8025 }
8026
8027 /*
8028 Check table fields only if the subquery is used in a context that
8029 is not the HAVING clause, or in case the HAVING clause can be
8030 implemented as a WHERE clause (i.e. the query block is not grouped
8031 - implicitly or explicitly - and DISTINCT filtering is not present).
8032 TODO:
8033 Implement proper SQL resolving, by looking at fields from columns
8034 only and reject fields in HAVING clause that are not functionally
8035 dependent on grouping columns from this query block.
8036 In order to preserve MySQL semantics, we may need to accept
8037 fields from the SELECT fields, until this feature has been removed.
8038 */
8039
4/4
✓ Branch 0 taken 3 times.
✓ Branch 1 taken 52 times.
✓ Branch 2 taken 52 times.
✓ Branch 3 taken 3 times.
 58 if (place != CTX_HAVING ||
8040
4/4
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 1 times.
✓ Branch 2 taken 1 times.
✓ Branch 3 taken 1 times.
 3 (!select->with_sum_func && select->group_list.elements == 0 &&
8041
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 !select->is_distinct())) {
8042 /*
8043 In case of view, find_field_in_tables() write pointer to view
8044 field expression to 'reference', i.e. it substitute that
8045 expression instead of this Item_ref
8046 */
8047
1/2
✓ Branch 0 taken 52 times.
✗ Branch 1 not taken.
 52 from_field = find_field_in_tables(
8048 thd, this, outer_context->first_name_resolution_table,
8049 outer_context->last_name_resolution_table, reference,
8050 IGNORE_EXCEPT_NON_UNIQUE, thd->want_privilege, true);
8051
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 51 times.
 52 if (!from_field) goto error;
8052
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 50 times.
 51 if (from_field == view_ref_found) {
8053
1/2
✓ Branch 0 taken 1 times.
✗ Branch 1 not taken.
 1 Item::Type refer_type = (*reference)->type();
8054
1/2
✓ Branch 0 taken 1 times.
✗ Branch 1 not taken.
 1 cur_query_expression->accumulate_used_tables(
8055
1/2
✓ Branch 0 taken 1 times.
✗ Branch 1 not taken.
 1 (*reference)->used_tables());
8056
2/4
✓ Branch 0 taken 1 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 1 times.
 1 assert((*reference)->type() == REF_ITEM);
8057
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 mark_as_dependent(
8058
1/2
✓ Branch 0 taken 1 times.
✗ Branch 1 not taken.
 1 thd, last_checked_context->query_block, context->query_block,
8059 this,
8060 ✗ ((refer_type == REF_ITEM || refer_type == FIELD_ITEM)
8061 ? (Item_ident *)(*reference)
8062 : nullptr));
8063 /*
8064 view reference found, we substituted it instead of this
8065 Item, so can quit
8066 */
8067 1 return false;
8068 }
8069
2/2
✓ Branch 0 taken 38 times.
✓ Branch 1 taken 12 times.
 50 if (from_field != not_found_field) {
8070
2/4
✓ Branch 0 taken 38 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 38 times.
✗ Branch 3 not taken.
 38 if (cached_table && cached_table->query_block &&
8071
1/2
✓ Branch 0 taken 38 times.
✗ Branch 1 not taken.
 38 outer_context->query_block &&
8072
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 38 times.
 38 cached_table->query_block != outer_context->query_block) {
8073 /*
8074 Due to cache, find_field_in_tables() can return field which
8075 doesn't belong to provided outer_context. In this case we have
8076 to find proper field context in order to fix field correctly.
8077 */
8078 do {
8079 ✗ outer_context = outer_context->outer_context;
8080 ✗ select = outer_context->query_block;
8081 ✗ cur_query_expression = last_checked_context->query_block
8082 ✗ ->master_query_expression();
8083 ✗ last_checked_context = outer_context;
8084 ✗ } while (outer_context && outer_context->query_block &&
8085 ✗ cached_table->query_block != outer_context->query_block);
8086 ✗ place = cur_query_expression->place();
8087 }
8088
1/2
✓ Branch 0 taken 38 times.
✗ Branch 1 not taken.
 38 cur_query_expression->accumulate_used_tables(
8089 38 from_field->table->pos_in_table_list->map());
8090 38 break;
8091 }
8092 }
8093
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 15 times.
 15 assert(from_field == not_found_field);
8094
8095 /* Reference is not found => depend on outer (or just error). */
8096
1/2
✓ Branch 0 taken 15 times.
✗ Branch 1 not taken.
 15 cur_query_expression->accumulate_used_tables(OUTER_REF_TABLE_BIT);
8097
8098 15 loop:
8099 15 outer_context = outer_context->outer_context;
8100
2/2
✓ Branch 0 taken 12 times.
✓ Branch 1 taken 3 times.
 15 } while (outer_context);
8101
8102
2/4
✓ Branch 0 taken 77 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 77 times.
✗ Branch 3 not taken.
 77 assert(from_field != nullptr && from_field != view_ref_found);
8103
2/2
✓ Branch 0 taken 38 times.
✓ Branch 1 taken 39 times.
 77 if (from_field != not_found_field) {
8104 Item_field *fld;
8105
8106 {
8107
1/2
✓ Branch 0 taken 38 times.
✗ Branch 1 not taken.
 38 Prepared_stmt_arena_holder ps_arena_holder(thd);
8108 38 fld = new Item_field(
8109
2/4
✓ Branch 0 taken 38 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 38 times.
✗ Branch 3 not taken.
 38 thd, context, from_field->table->pos_in_table_list, from_field);
8110
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 38 times.
 38 if (fld == nullptr) goto error;
8111
1/2
✓ Branch 0 taken 38 times.
✗ Branch 1 not taken.
 38 }
8112
8113 38 *reference = fld;
8114 // WL#6570 remove-after-qa
8115
3/4
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 36 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 2 times.
 38 assert(thd->stmt_arena->is_regular() || !thd->lex->is_exec_started());
8116 38 mark_as_dependent(thd, last_checked_context->query_block,
8117
1/2
✓ Branch 0 taken 38 times.
✗ Branch 1 not taken.
 38 context->query_block, this, fld);
8118 /*
8119 A reference is resolved to a nest level that's outer or the same as
8120 the nest level of the enclosing set function : adjust the value of
8121 max_aggr_level for the function if it's needed.
8122 */
8123
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 38 times.
 38 if (thd->lex->in_sum_func &&
8124 ✗ thd->lex->in_sum_func->base_query_block->nest_level >=
8125 ✗ last_checked_context->query_block->nest_level)
8126 ✗ thd->lex->in_sum_func->max_aggr_level =
8127 ✗ max(thd->lex->in_sum_func->max_aggr_level,
8128 ✗ int8(last_checked_context->query_block->nest_level));
8129 38 return false;
8130 }
8131
2/2
✓ Branch 0 taken 3 times.
✓ Branch 1 taken 36 times.
 39 if (ref == nullptr) {
8132 /* The item was not a table field and not a reference */
8133
1/2
✓ Branch 0 taken 3 times.
✗ Branch 1 not taken.
 3 my_error(ER_BAD_FIELD_ERROR, MYF(0), this->full_name(),
8134
2/4
✓ Branch 0 taken 3 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 3 times.
✗ Branch 3 not taken.
 3 current_thd->where);
8135 3 goto error;
8136 }
8137 /* Should be checked in resolve_ref_in_select_and_group(). */
8138
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 36 times.
 36 assert((*ref)->fixed);
8139 36 mark_as_dependent(thd, last_checked_context->query_block,
8140
1/2
✓ Branch 0 taken 36 times.
✗ Branch 1 not taken.
 36 context->query_block, this, this);
8141 /*
8142 A reference is resolved to a nest level that's outer or the same as
8143 the nest level of the enclosing set function : adjust the value of
8144 max_aggr_level for the function if it's needed.
8145 */
8146
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 36 times.
 36 if (thd->lex->in_sum_func &&
8147 ✗ thd->lex->in_sum_func->base_query_block->nest_level >=
8148 ✗ last_checked_context->query_block->nest_level)
8149 ✗ thd->lex->in_sum_func->max_aggr_level =
8150 ✗ max(thd->lex->in_sum_func->max_aggr_level,
8151 ✗ int8(last_checked_context->query_block->nest_level));
8152 }
8153 }
8154
8155 // The reference should be fixed at this point.
8156
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1235 times.
 1235 assert((*ref)->fixed);
8157
8158 /*
8159 Reject invalid references to aggregates.
8160
8161 1) We only accept references to aggregates in a HAVING clause.
8162 (This restriction is not strictly necessary, but we don't want to
8163 lift it without making sure that such queries are handled
8164 correctly. Lifting the restriction will make bugs such as
8165 bug#13633829 and bug#22588319 (aka bug#80116) affect a larger set
8166 of queries.)
8167
8168 2) An aggregate cannot be referenced from the GROUP BY clause of
8169 the query block where the aggregation happens, since grouping
8170 happens before aggregation.
8171 */
8172 1235 if (((*ref)->has_aggregation() &&
8173
6/6
✓ Branch 0 taken 372 times.
✓ Branch 1 taken 863 times.
✓ Branch 2 taken 337 times.
✓ Branch 3 taken 35 times.
✓ Branch 4 taken 44 times.
✓ Branch 5 taken 1191 times.
 2435 !thd->lex->current_query_block()->having_fix_field) || // 1
8174
3/4
✓ Branch 0 taken 1200 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 9 times.
✓ Branch 3 taken 1191 times.
 1200 walk(&Item::has_aggregate_ref_in_group_by, // 2
8175 enum_walk::SUBQUERY_POSTFIX, nullptr)) {
8176
2/4
✓ Branch 0 taken 44 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 44 times.
✗ Branch 3 not taken.
 44 my_error(ER_ILLEGAL_REFERENCE, MYF(0), full_name(),
8177 "reference to group function");
8178 44 goto error;
8179 }
8180
8181
1/2
✓ Branch 0 taken 1191 times.
✗ Branch 1 not taken.
 1191 set_properties();
8182
8183
2/4
✓ Branch 0 taken 1191 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 1191 times.
 1191 if ((*ref)->check_cols(1)) goto error;
8184 1191 return false;
8185
8186 60 error:
8187 60 return true;
8188 1290 }
8189
8190 4620027 void Item_ref::set_properties() {
8191
1/2
✓ Branch 0 taken 4620027 times.
✗ Branch 1 not taken.
 4620027 DBUG_TRACE;
8192
8193 4620027 set_data_type((*ref)->data_type());
8194 4620027 max_length = (*ref)->max_length;
8195 4620027 set_nullable((*ref)->is_nullable());
8196 4620027 decimals = (*ref)->decimals;
8197 4620027 collation.set((*ref)->collation);
8198 /*
8199 We have to remember if we refer to a sum function, to ensure that
8200 split_sum_func() doesn't try to change the reference.
8201 */
8202 4620027 set_accum_properties(*ref);
8203 4620026 unsigned_flag = (*ref)->unsigned_flag;
8204 4620026 fixed = true;
8205
5/8
✓ Branch 0 taken 4620026 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 2683730 times.
✓ Branch 3 taken 1936296 times.
✗ Branch 4 not taken.
✓ Branch 5 taken 2683730 times.
✗ Branch 6 not taken.
✓ Branch 7 taken 4620026 times.
 7303756 if ((*ref)->type() == FIELD_ITEM &&
8206 2683730 ((Item_ident *)(*ref))->is_alias_of_expr())
8207 ✗ set_alias_of_expr();
8208 4620026 }
8209
8210 4592362 void Item_ref::cleanup() {
8211
1/2
✓ Branch 0 taken 4592372 times.
✗ Branch 1 not taken.
 4592362 DBUG_TRACE;
8212 4592372 Item_ident::cleanup();
8213 4592371 result_field = nullptr;
8214 4592371 }
8215
8216 /**
8217 Transform an Item_ref object with a transformer callback function.
8218
8219 The function first applies the transform function to the item
8220 referenced by this Item_ref object. If this replaces the item with a
8221 new one, this item object is returned as the result of the
8222 transform. Otherwise the transform function is applied to the
8223 Item_ref object itself.
8224 */
8225
8226 57 Item *Item_ref::transform(Item_transformer transformer, uchar *arg) {
8227
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 57 times.
 57 assert((*ref) != nullptr);
8228
8229 /* Transform the object we are referencing. */
8230 57 Item *new_item = (*ref)->transform(transformer, arg);
8231
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 57 times.
 57 if (new_item == nullptr) return nullptr;
8232
8233 /*
8234 If the object is transformed into a new object, discard the Item_ref
8235 object and return the new object as result.
8236 */
8237
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 57 times.
 57 if (new_item != *ref) return new_item;
8238
8239 /* Transform the item ref object. */
8240
1/2
✓ Branch 0 taken 57 times.
✗ Branch 1 not taken.
 57 Item *transformed_item = (this->*transformer)(arg);
8241 // assert(transformed_item == this);
8242 57 return transformed_item;
8243 }
8244
8245 /**
8246 Compile an Item_ref object with a processor and a transformer
8247 callback function.
8248
8249 First the function applies the analyzer to the Item_ref
8250 object. Second it applies the compile function to the object the
8251 Item_ref object is referencing. If this replaces the item with a new
8252 one, this object is returned as the result of the compile.
8253 Otherwise we apply the transformer to the Item_ref object itself.
8254 */
8255
8256 585156 Item *Item_ref::compile(Item_analyzer analyzer, uchar **arg_p,
8257 Item_transformer transformer, uchar *arg_t) {
8258
4/4
✓ Branch 0 taken 386574 times.
✓ Branch 1 taken 198582 times.
✓ Branch 2 taken 189605 times.
✓ Branch 3 taken 395551 times.
 585156 if (!(this->*analyzer)(arg_p)) return this;
8259
8260
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 395551 times.
 395551 assert((*ref) != nullptr);
8261 395551 Item *new_item = (*ref)->compile(analyzer, arg_p, transformer, arg_t);
8262
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 395551 times.
 395551 if (new_item == nullptr) return nullptr;
8263
8264 /*
8265 If the object is compiled into a new object, discard the Item_ref
8266 object and return the new object as result.
8267 */
8268
2/2
✓ Branch 0 taken 9 times.
✓ Branch 1 taken 395542 times.
 395551 if (new_item != *ref) return new_item;
8269
8270
2/2
✓ Branch 0 taken 200095 times.
✓ Branch 1 taken 195447 times.
 395542 return (this->*transformer)(arg_t);
8271 }
8272
8273 10349 void Item_ref::print(const THD *thd, String *str,
8274 enum_query_type query_type) const {
8275
2/2
✓ Branch 0 taken 8 times.
✓ Branch 1 taken 10341 times.
 10349 if (ref == nullptr) // Unresolved reference: print reference
8276 8 return Item_ident::print(thd, str, query_type);
8277
8278
1/2
✓ Branch 0 taken 122 times.
✗ Branch 1 not taken.
 122 if (m_alias_of_expr && (*ref)->type() != Item::CACHE_ITEM &&
8279
7/10
✓ Branch 0 taken 122 times.
✓ Branch 1 taken 10219 times.
✓ Branch 2 taken 122 times.
✗ Branch 3 not taken.
✓ Branch 4 taken 122 times.
✗ Branch 5 not taken.
✓ Branch 6 taken 122 times.
✗ Branch 7 not taken.
✓ Branch 8 taken 122 times.
✓ Branch 9 taken 10219 times.
 10463 ref_type() != VIEW_REF && table_name == nullptr && item_name.ptr()) {
8280
1/2
✓ Branch 0 taken 122 times.
✗ Branch 1 not taken.
 122 Simple_cstring str1 = (*ref)->real_item()->item_name;
8281
1/2
✓ Branch 0 taken 122 times.
✗ Branch 1 not taken.
 122 append_identifier(thd, str, str1.ptr(), str1.length());
8282 } else
8283 10219 (*ref)->print(thd, str, query_type);
8284 }
8285
8286 23228854 bool Item_ref::send(Protocol *prot, String *tmp) {
8287 23228854 return (*ref)->send(prot, tmp);
8288 }
8289
8290 49975 double Item_ref::val_real() {
8291
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 49975 times.
 49975 assert(fixed);
8292 49975 double tmp = (*ref)->val_real();
8293 49975 null_value = (*ref)->null_value;
8294 49975 return tmp;
8295 }
8296
8297 313942 longlong Item_ref::val_int() {
8298
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 313942 times.
 313942 assert(fixed);
8299 313942 longlong tmp = (*ref)->val_int();
8300 313942 null_value = (*ref)->null_value;
8301 313942 return tmp;
8302 }
8303
8304 25 longlong Item_ref::val_time_temporal() {
8305
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 25 times.
 25 assert(fixed);
8306
3/4
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 24 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 1 times.
 25 assert((*ref)->is_temporal() || (*ref)->is_null());
8307 25 longlong tmp = (*ref)->val_time_temporal();
8308 25 null_value = (*ref)->null_value;
8309 25 return tmp;
8310 }
8311
8312 7338 longlong Item_ref::val_date_temporal() {
8313
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 7338 times.
 7338 assert(fixed);
8314
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 7338 times.
 7338 assert((*ref)->is_temporal());
8315 7338 longlong tmp = (*ref)->val_date_temporal();
8316 7338 null_value = (*ref)->null_value;
8317 7338 return tmp;
8318 }
8319
8320 791 bool Item_ref::val_bool() {
8321
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 791 times.
 791 assert(fixed);
8322 791 bool tmp = (*ref)->val_bool();
8323 791 null_value = (*ref)->null_value;
8324 791 return tmp;
8325 }
8326
8327 26331368 String *Item_ref::val_str(String *tmp) {
8328
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 26331368 times.
 26331368 assert(fixed);
8329 26331368 tmp = (*ref)->val_str(tmp);
8330 26331368 null_value = (*ref)->null_value;
8331 26331368 return tmp;
8332 }
8333
8334 1550 bool Item_ref::val_json(Json_wrapper *result) {
8335
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1550 times.
 1550 assert(fixed);
8336 1550 bool ok = (*ref)->val_json(result);
8337 1550 null_value = (*ref)->null_value;
8338 1550 return ok;
8339 }
8340
8341 4653 bool Item_ref::is_null() {
8342
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4653 times.
 4653 assert(fixed);
8343 4653 bool tmp = (*ref)->is_null();
8344 4653 null_value = (*ref)->null_value;
8345 4653 return tmp;
8346 }
8347
8348 4170 bool Item_ref::get_date(MYSQL_TIME *ltime, my_time_flags_t fuzzydate) {
8349
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4170 times.
 4170 assert(fixed);
8350 4170 bool result = (*ref)->get_date(ltime, fuzzydate);
8351 4170 null_value = (*ref)->null_value;
8352 4170 return result;
8353 }
8354
8355 29297 my_decimal *Item_ref::val_decimal(my_decimal *decimal_value) {
8356 29297 my_decimal *val = (*ref)->val_decimal(decimal_value);
8357 29297 null_value = (*ref)->null_value;
8358 29297 return val;
8359 }
8360
8361 196107305 type_conversion_status Item_ref::save_in_field_inner(Field *to,
8362 bool no_conversions) {
8363 type_conversion_status res;
8364 196107305 res = (*ref)->save_in_field(to, no_conversions);
8365 196107306 null_value = (*ref)->null_value;
8366 196107306 return res;
8367 }
8368
8369 800646 void Item_ref::make_field(Send_field *field) {
8370 800646 (*ref)->make_field(field);
8371 /* Non-zero in case of a view */
8372
1/2
✓ Branch 0 taken 800646 times.
✗ Branch 1 not taken.
 800646 if (item_name.is_set()) field->col_name = item_name.ptr();
8373
2/2
✓ Branch 0 taken 800638 times.
✓ Branch 1 taken 8 times.
 800646 if (table_name) field->table_name = table_name;
8374
2/2
✓ Branch 0 taken 795849 times.
✓ Branch 1 taken 4797 times.
 800646 if (m_orig_db_name) field->db_name = m_orig_db_name;
8375
1/2
✓ Branch 0 taken 800646 times.
✗ Branch 1 not taken.
 800646 if (m_orig_field_name) field->org_col_name = m_orig_field_name;
8376
2/2
✓ Branch 0 taken 800638 times.
✓ Branch 1 taken 8 times.
 800646 if (m_orig_table_name) field->org_table_name = m_orig_table_name;
8377 /*
8378 Some connectors expect a schema name that is empty when a view column
8379 is defined over an expression that is not a column reference from a
8380 view or a table. This is used to flag the column as read-only.
8381 */
8382
2/2
✓ Branch 0 taken 241176 times.
✓ Branch 1 taken 559470 times.
 800646 if (real_item()->type() != Item::FIELD_ITEM) field->db_name = "";
8383 800646 }
8384
8385 2548105 Item *Item_ref::get_tmp_table_item(THD *thd) {
8386
1/2
✓ Branch 0 taken 2548109 times.
✗ Branch 1 not taken.
 2548105 DBUG_TRACE;
8387
2/2
✓ Branch 0 taken 280542 times.
✓ Branch 1 taken 2267567 times.
 2548109 if (!result_field) {
8388
1/2
✓ Branch 0 taken 280542 times.
✗ Branch 1 not taken.
 280542 Item *result = (*ref)->get_tmp_table_item(thd);
8389 280542 return result;
8390 }
8391
8392
2/4
✓ Branch 0 taken 2267567 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 2267563 times.
✗ Branch 3 not taken.
 2267567 Item_field *item = new Item_field(result_field);
8393
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2267563 times.
 2267563 if (item == nullptr) return nullptr;
8394
8395 2267563 item->set_orignal_db_name(m_orig_db_name);
8396 2267565 item->db_name = db_name;
8397 2267565 item->table_name = table_name;
8398
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 2267565 if (real_item()->type() == Item::FIELD_ITEM)
8399 1545546 item->set_original_table_name(
8400
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 1545546 down_cast<Item_field *>(real_item())->original_table_name());
8401
8402 2267566 return item;
8403 2548108 }
8404
8405 47 void Item_ref_null_helper::print(const THD *thd, String *str,
8406 enum_query_type query_type) const {
8407 47 str->append(STRING_WITH_LEN("<ref_null_helper>("));
8408
1/2
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✗ Branch 1 not taken.
 47 if (ref)
8409 47 (*ref)->print(thd, str, query_type);
8410 else
8411 ✗ str->append('?');
8412 47 str->append(')');
8413 47 }
8414
8415 ✗ bool Item_ref::collect_item_field_or_ref_processor(uchar *arg) {
8416 ✗ auto *info = pointer_cast<Collect_item_fields_or_refs *>(arg);
8417 ✗ if (info->is_stopped(this)) return false;
8418 ✗ if (real_item()->type() == Item::FIELD_ITEM) info->m_items->push_back(this);
8419 ✗ info->stop_at(this);
8420 ✗ return false;
8421 }
8422
8423 /**
8424 Prepare referenced field then call usual Item_ref::fix_fields .
8425
8426 @param thd Current session.
8427 @param reference reference on reference where this item stored
8428
8429 @retval
8430 false OK
8431 @retval
8432 true Error
8433 */
8434
8435 ✗ bool Item_view_ref::fix_fields(THD *thd, Item **reference) {
8436 ✗ assert(*ref); // view field reference must be defined
8437
8438 // (*ref)->check_cols() will be made in Item_ref::fix_fields
8439 ✗ if ((*ref)->fixed) {
8440 /*
8441 Underlying Item_field objects may be shared. Make sure that the use
8442 is marked regardless of how many ref items that point to this field.
8443 */
8444 ✗ Mark_field mf(thd->mark_used_columns);
8445 ✗ (*ref)->walk(&Item::mark_field_in_map, enum_walk::POSTFIX, (uchar *)&mf);
8446 } else {
8447 ✗ if ((*ref)->fix_fields(thd, ref)) return true; /* purecov: inspected */
8448 }
8449 ✗ if (super::fix_fields(thd, reference)) return true;
8450
8451 ✗ if (cached_table->is_inner_table_of_outer_join()) {
8452 ✗ set_nullable(true);
8453 ✗ first_inner_table = cached_table->any_outer_leaf_table();
8454 }
8455 ✗ return false;
8456 }
8457
8458 /**
8459 Prepare referenced outer field then call usual Item_ref::fix_fields
8460
8461 @param thd thread handler
8462 @param reference reference on reference where this item stored
8463
8464 @details
8465 The function serves 3 purposes
8466 - adds field to the current select list
8467 - creates an object to use to reference the item (Item_ref)
8468 - fixes reference (Item_ref object)
8469
8470 If a field isn't already on the select list and the base_ref_items array
8471 is provided then it is added to the all_fields list and the pointer to
8472 it is saved in the base_ref_items array.
8473
8474 When the class is chosen it substitutes the original field in the
8475 Item_outer_ref object.
8476
8477 @returns true if error
8478 */
8479
8480 138 bool Item_outer_ref::fix_fields(THD *thd, Item **reference) {
8481 /* outer_ref->check_cols() will be made in Item_ref::fix_fields */
8482
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 138 if ((*ref) && !(*ref)->fixed && ((*ref)->fix_fields(thd, reference)))
8483 ✗ return true;
8484
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✓ Branch 1 taken 121 times.
 138 if (super::fix_fields(thd, reference)) return true;
8485
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 121 if (!outer_ref) outer_ref = *ref;
8486
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 121 if ((*ref)->type() == Item::FIELD_ITEM)
8487 120 table_name = ((Item_field *)outer_ref)->table_name;
8488
8489 121 Item *item = outer_ref;
8490 121 Item **item_ref = ref;
8491
8492 /*
8493 TODO: this field item already might be present in the select list.
8494 In this case instead of adding new field item we could use an
8495 existing one. The change will lead to less operations for copying fields,
8496 smaller temporary tables and less data passed through filesort.
8497 */
8498
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 121 assert(!qualifying->base_ref_items.is_null());
8499
1/2
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 121 if (!found_in_select_list) {
8500 /*
8501 Add the field item to the select list of the current select.
8502 If it's needed reset each Item_ref item that refers this field with
8503 a new reference taken from ref_item_array.
8504 */
8505 121 item_ref = qualifying->add_hidden_item(item);
8506 /*
8507 Now the item is in the all_fields list, which elements are used to fill
8508 temporary tables created by the optimizer; thus it will be read and must
8509 be marked as such. Outer references are never written to.
8510 */
8511
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 121 if (item->fixed) {
8512 121 Mark_field mf(MARK_COLUMNS_READ);
8513
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 121 item->walk(&Item::mark_field_in_map, enum_walk::POSTFIX, (uchar *)&mf);
8514 }
8515 }
8516
8517 Item_ref *const new_ref =
8518
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 121 new Item_ref(context, item_ref, db_name, table_name, field_name);
8519
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 121 if (new_ref == nullptr) return true; /* purecov: inspected */
8520 121 outer_ref = new_ref;
8521 121 ref = &outer_ref;
8522
8523 121 qualifying->select_list_tables |= item->used_tables();
8524
8525 121 return false;
8526 }
8527
8528 34 void Item_outer_ref::fix_after_pullout(Query_block *parent_query_block,
8529 Query_block *removed_query_block) {
8530 /*
8531 If this assertion holds, we need not call fix_after_pullout() on both
8532 *ref and outer_ref, and Item_ref::fix_after_pullout() is sufficient.
8533 */
8534
1/2
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 34 assert(*ref == outer_ref);
8535
8536 34 Item_ref::fix_after_pullout(parent_query_block, removed_query_block);
8537 34 }
8538
8539 ✗ Item *Item_outer_ref::replace_outer_ref(uchar *arg) {
8540 ✗ auto *info = pointer_cast<Item_outer_ref *>(arg);
8541 ✗ if (this == info) return real_item();
8542 ✗ return this;
8543 }
8544
8545 374028 void Item_ref::fix_after_pullout(Query_block *parent_query_block,
8546 Query_block *removed_query_block) {
8547 374028 (*ref)->fix_after_pullout(parent_query_block, removed_query_block);
8548
8549 374028 Item_ident::fix_after_pullout(parent_query_block, removed_query_block);
8550 374028 }
8551
8552 /**
8553 Compare two view column references for equality.
8554
8555 A view column reference is considered equal to another column
8556 reference if the second one is a view column and if both column
8557 references resolve to the same item. It is assumed that both
8558 items are of the same type.
8559
8560 @param item item to compare with
8561
8562 @retval
8563 true Referenced item is equal to given item
8564 @retval
8565 false otherwise
8566 */
8567
8568 643163 bool Item_view_ref::eq(const Item *item, bool) const {
8569
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 643163 if (item->type() == REF_ITEM) {
8570 475118 const Item_ref *item_ref = down_cast<const Item_ref *>(item);
8571
1/2
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 475118 if (item_ref->ref_type() == VIEW_REF) {
8572 475118 Item *item_ref_ref = *(item_ref->ref);
8573 475118 return ((*ref)->real_item() == item_ref_ref->real_item());
8574 }
8575 }
8576 168045 return false;
8577 }
8578
8579 60882 longlong Item_view_ref::val_int() {
8580
2/2
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✓ Branch 1 taken 60842 times.
 60882 if (has_null_row()) {
8581 40 null_value = true;
8582 40 return 0;
8583 }
8584 60842 return super::val_int();
8585 }
8586
8587 20289 double Item_view_ref::val_real() {
8588
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 20289 if (has_null_row()) {
8589 ✗ null_value = true;
8590 ✗ return 0.0;
8591 }
8592 20289 return super::val_real();
8593 }
8594
8595 22719 my_decimal *Item_view_ref::val_decimal(my_decimal *dec) {
8596
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 22719 if (has_null_row()) {
8597 ✗ null_value = true;
8598 ✗ return nullptr;
8599 }
8600 22719 return super::val_decimal(dec);
8601 }
8602
8603 25988927 String *Item_view_ref::val_str(String *str) {
8604
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 25988927 if (has_null_row()) {
8605 29 null_value = true;
8606 29 return nullptr;
8607 }
8608 25988898 return super::val_str(str);
8609 }
8610
8611 16 bool Item_view_ref::val_bool() {
8612
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 16 if (has_null_row()) {
8613 ✗ null_value = true;
8614 ✗ return false;
8615 }
8616 16 return super::val_bool();
8617 }
8618
8619 260 bool Item_view_ref::val_json(Json_wrapper *wr) {
8620
2/2
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 260 if (has_null_row()) {
8621 2 null_value = true;
8622 2 return false;
8623 }
8624 258 return super::val_json(wr);
8625 }
8626
8627 8309 bool Item_view_ref::is_null() {
8628
2/2
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 8309 if (has_null_row()) return true;
8629
8630 8304 return (*ref)->is_null();
8631 }
8632
8633 23229412 bool Item_view_ref::send(Protocol *prot, String *tmp) {
8634
2/2
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✓ Branch 1 taken 23228846 times.
 23229412 if (has_null_row()) return prot->store_null();
8635 23228846 return super::send(prot, tmp);
8636 }
8637
8638 196104576 type_conversion_status Item_view_ref::save_in_field_inner(Field *field,
8639 bool no_conversions) {
8640
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 196104576 if (has_null_row())
8641 155 return set_field_to_null_with_conversions(field, no_conversions);
8642
8643 196104421 return super::save_in_field_inner(field, no_conversions);
8644 }
8645
8646 ✗ bool Item_view_ref::collect_item_field_or_view_ref_processor(uchar *arg) {
8647 ✗ auto *info = pointer_cast<Collect_item_fields_or_view_refs *>(arg);
8648 ✗ if (info->is_stopped(this)) return false;
8649 // We collect this view ref
8650 // (1) If its qualifying table is in the transformed query block
8651 // (2) If its underlying field's qualifying table is in the transformed
8652 // query block
8653 // (3) If this view ref is an outer reference dependent on the
8654 // transformed query block
8655 ✗ Item *item = nullptr;
8656 ✗ item = (context->query_block == info->m_transformed_block) // 1
8657 ✗ ? this
8658 ✗ : ((real_item()->type() == Item::FIELD_ITEM &&
8659 ✗ (down_cast<Item_field *>(real_item())->context->query_block ==
8660 ✗ info->m_transformed_block)) // 2
8661 ✗ ? this->real_item()
8662 ✗ : ((depended_from == info->m_transformed_block) // 3
8663 ✗ ? this
8664 : nullptr));
8665 ✗ if (item != nullptr) info->m_item_fields_or_view_refs->push_back(item);
8666 ✗ info->stop_at(this);
8667 ✗ return false;
8668 }
8669
8670 ✗ Item *Item_view_ref::replace_item_view_ref(uchar *arg) {
8671 ✗ auto *info = pointer_cast<Item::Item_view_ref_replacement *>(arg);
8672 ✗ Item *real_item = Item_ref::real_item();
8673 ✗ if (real_item == info->m_target) {
8674 Item_field *new_field =
8675 ✗ new (current_thd->mem_root) Item_field(info->m_field);
8676 ✗ if (new_field == nullptr) return nullptr;
8677 // Set correct metadata for the new field incl. any alias.
8678 ✗ if (orig_name.length() != 0) {
8679 // The one moved to new_derived has its orig_name set
8680 ✗ new_field->item_name.set(orig_name.ptr());
8681 ✗ new_field->orig_name.set(orig_name.ptr());
8682 } else {
8683 // this is a duplicated view reference, not touched yet.
8684 ✗ new_field->item_name.set(item_name.ptr());
8685 ✗ new_field->orig_name.set(item_name.ptr());
8686 }
8687 ✗ if (info->m_curr_block == info->m_trans_block) {
8688 ✗ return new_field;
8689 }
8690
8691 // The is an outer reference, so we cannot reuse transformed query
8692 // block's Item_field; make a new one for this query block
8693 ✗ new_field->depended_from = info->m_trans_block;
8694 ✗ new_field->context = &info->m_curr_block->context;
8695 ✗ return new_field;
8696 }
8697 ✗ return this;
8698 }
8699
8700 49 Item *Item_view_ref::replace_view_refs_with_clone(uchar *arg) {
8701 Condition_pushdown::Derived_table_info *dti =
8702 49 pointer_cast<Condition_pushdown::Derived_table_info *>(arg);
8703
8704 // Replace the view ref with a clone to the referenced item.
8705 // We use a different context to resolve the clone from that of
8706 // the derived table context.
8707 // For Ex:
8708 // SELECT * FROM
8709 // (SELECT f1 FROM (SELECT f1 FROM t1 GROUP BY f1) AS dt1) AS dt2
8710 // WHERE f1 > 3 GROUP BY f1;
8711 // Here dt2 gets merged with the outer query block. As a result, "f1"
8712 // in the outer query block (in select list, where clause and group by)
8713 // will be a view reference. The underlying field for all three
8714 // view references is shared. Therefore, when "f1>3" needs to be
8715 // pushed down to dt1, we need to clone the referenced item (dt2.f1).
8716 // Since the query block having dt2 is merged with the outer query
8717 // block, the context to resolve the field will be different than
8718 // the derived table context (dt1).
8719 49 return dti->m_derived_query_block->outer_query_block()->clone_expression(
8720 49 current_thd, *ref,
8721
2/2
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 55 (dti->m_derived_table->is_system_view ||
8722
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 6 (dti->m_derived_table->referencing_view &&
8723
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 49 dti->m_derived_table->referencing_view->is_system_view)));
8724 }
8725
8726 5540 bool Item_default_value::itemize(Parse_context *pc, Item **res) {
8727
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 5540 if (skip_itemize(res)) return false;
8728
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 5540 if (super::itemize(pc, res)) return true;
8729
8730
2/2
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 5540 if (arg != nullptr) {
8731
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 59 if (arg->itemize(pc, &arg)) return true;
8732
2/2
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 59 if (arg->is_splocal()) {
8733 1 Item_splocal *il = static_cast<Item_splocal *>(arg);
8734
8735 1 my_error(ER_WRONG_COLUMN_NAME, MYF(0), il->m_name.ptr());
8736 1 return true;
8737 }
8738 }
8739 5539 return false;
8740 }
8741
8742 ✗ bool Item_default_value::eq(const Item *item, bool binary_cmp) const {
8743 ✗ return item->type() == DEFAULT_VALUE_ITEM &&
8744 ✗ down_cast<const Item_default_value *>(item)->arg->eq(arg, binary_cmp);
8745 }
8746
8747 5451 bool Item_default_value::fix_fields(THD *thd, Item **) {
8748
1/2
✗ Branch 0 not taken.
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 5451 assert(!fixed);
8749
8750 Internal_error_handler_holder<View_error_handler, TABLE_LIST> view_handler(
8751
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 5451 thd, context->view_error_handler, context->view_error_handler_arg);
8752
2/2
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 5451 if (arg == nullptr) {
8753 5410 fixed = true;
8754 5410 return false;
8755 }
8756
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 41 if (!arg->fixed && arg->fix_fields(thd, &arg)) return true;
8757
8758
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 41 Item *const real_arg = arg->real_item();
8759
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 41 if (real_arg->type() != FIELD_ITEM) {
8760 ✗ my_error(ER_NO_DEFAULT_FOR_FIELD, MYF(0), arg->item_name.ptr());
8761 ✗ return true;
8762 }
8763
8764 41 Item_field *const field_arg = down_cast<Item_field *>(real_arg);
8765
2/2
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 41 if (field_arg->field->is_flag_set(NO_DEFAULT_VALUE_FLAG)) {
8766
1/2
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✗ Branch 1 not taken.
 6 my_error(ER_NO_DEFAULT_FOR_FIELD, MYF(0), field_arg->field->field_name);
8767 6 return true;
8768 }
8769
8770
2/2
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 35 if (field_arg->field->has_insert_default_general_value_expression()) {
8771
1/2
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✗ Branch 1 not taken.
 16 my_error(ER_DEFAULT_AS_VAL_GENERATED, MYF(0));
8772 16 return true;
8773 }
8774
8775
1/2
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 19 Field *const def_field = field_arg->field->clone(thd->mem_root);
8776
1/2
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 19 if (def_field == nullptr) return true;
8777
8778
1/2
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✗ Branch 1 not taken.
 19 def_field->move_field_offset(def_field->table->default_values_offset());
8779 19 m_rowbuffer_saved = def_field->table->s->default_values;
8780
8781 // Assign the cloned field as the one to use hereafter
8782
1/2
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✗ Branch 1 not taken.
 19 set_field(def_field);
8783
8784 // Needs cached_table for some Item traversal functions:
8785 19 cached_table = table_ref;
8786
8787 // Use same field name as the underlying field:
8788
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 19 times.
 19 assert(field_name == nullptr);
8789 19 field_name = arg->item_name.ptr();
8790
8791 // Always allow a "read" from the default value.
8792
1/2
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✗ Branch 1 not taken.
 19 field->table->mark_column_used(field, MARK_COLUMNS_READ);
8793
8794 19 return false;
8795 5451 }
8796
8797 7144 void Item_default_value::bind_fields() {
8798
3/4
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✓ Branch 3 taken 4 times.
 7144 if (!fixed || arg == nullptr) return;
8799
8800 4 field->move_field_offset(
8801 4 (ptrdiff_t)(field->table->s->default_values - m_rowbuffer_saved));
8802 4 m_rowbuffer_saved = field->table->s->default_values;
8803 // Always allow a "read" from the default value.
8804 4 field->table->mark_column_used(field, MARK_COLUMNS_READ);
8805 }
8806
8807 14 void Item_default_value::print(const THD *thd, String *str,
8808 enum_query_type query_type) const {
8809
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 14 times.
 14 if (!arg) {
8810 ✗ str->append(STRING_WITH_LEN("default"));
8811 ✗ return;
8812 }
8813 14 str->append(STRING_WITH_LEN("default("));
8814 14 arg->print(thd, str, query_type);
8815 14 str->append(')');
8816 }
8817
8818 3702 type_conversion_status Item_default_value::save_in_field_inner(
8819 Field *field_arg, bool no_conversions) {
8820 3702 THD *thd = current_thd;
8821
2/2
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✓ Branch 1 taken 10 times.
 3702 if (!arg) {
8822 3692 if ((field_arg->is_flag_set(NO_DEFAULT_VALUE_FLAG) &&
8823
5/6
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 3730 field_arg->m_default_val_expr == nullptr) &&
8824
2/2
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✓ Branch 1 taken 3 times.
 38 field_arg->real_type() != MYSQL_TYPE_ENUM) {
8825
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 34 times.
 35 if (field_arg->reset()) {
8826 1 my_error(ER_CANT_CREATE_GEOMETRY_OBJECT, MYF(0));
8827 1 return TYPE_ERR_BAD_VALUE;
8828 }
8829
8830
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 34 times.
 34 if (context->view_error_handler) {
8831 ✗ TABLE_LIST *view = cached_table->top_table();
8832 ✗ push_warning_printf(thd, Sql_condition::SL_WARNING,
8833 ER_NO_DEFAULT_FOR_VIEW_FIELD,
8834 ER_THD(thd, ER_NO_DEFAULT_FOR_VIEW_FIELD), view->db,
8835 view->table_name);
8836 } else {
8837 34 push_warning_printf(
8838 thd, Sql_condition::SL_WARNING, ER_NO_DEFAULT_FOR_FIELD,
8839 ER_THD(thd, ER_NO_DEFAULT_FOR_FIELD), field_arg->field_name);
8840 }
8841 34 return TYPE_ERR_BAD_VALUE;
8842 }
8843
8844 // If this DEFAULT's value is actually an expression, mark the columns
8845 // it uses for reading. For inserts where the name is not explicitly
8846 // mentioned, this is set in COPY_INFO::get_function_default_columns
8847
2/2
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✓ Branch 1 taken 3404 times.
 3657 if (field_arg->has_insert_default_general_value_expression()) {
8848
2/2
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✓ Branch 1 taken 253 times.
 770 for (uint j = 0; j < field_arg->table->s->fields; j++) {
8849
2/2
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✓ Branch 1 taken 325 times.
 517 if (bitmap_is_set(&field_arg->m_default_val_expr->base_columns_map,
8850 j)) {
8851 192 bitmap_set_bit(field_arg->table->read_set, j);
8852 }
8853 }
8854 }
8855
8856 3657 field_arg->set_default();
8857 3657 return field_arg->validate_stored_val(current_thd);
8858 }
8859 10 return Item_field::save_in_field_inner(field_arg, no_conversions);
8860 }
8861
8862 10 Item *Item_default_value::transform(Item_transformer transformer, uchar *args) {
8863 /*
8864 If the value of arg is NULL, then this object represents a constant,
8865 so further transformation is unnecessary (and impossible).
8866 */
8867
2/2
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✓ Branch 1 taken 1 times.
 10 if (arg == nullptr) return this;
8868
8869 1 Item *new_item = arg->transform(transformer, args);
8870
1/2
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 1 if (new_item == nullptr) return nullptr; /* purecov: inspected */
8871
8872
1/2
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✗ Branch 1 not taken.
 1 return (this->*transformer)(args);
8873 }
8874
8875 4 bool Item_insert_value::eq(const Item *item, bool binary_cmp) const {
8876
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 4 return item->type() == INSERT_VALUE_ITEM &&
8877
0/2
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 4 (down_cast<const Item_insert_value *>(item))->arg->eq(arg, binary_cmp);
8878 }
8879
8880 99 bool Item_insert_value::fix_fields(THD *thd, Item **reference) {
8881
1/2
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✓ Branch 1 taken 99 times.
 99 assert(!fixed);
8882 // Argument must be resolved from first table
8883
2/2
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✓ Branch 1 taken 47 times.
 99 if (!arg->fixed) {
8884 52 TABLE_LIST *orig_next_table = context->last_name_resolution_table;
8885 52 context->last_name_resolution_table = context->first_name_resolution_table;
8886 52 bool res = arg->fix_fields(thd, &arg);
8887 52 context->last_name_resolution_table = orig_next_table;
8888
2/2
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✓ Branch 1 taken 51 times.
 52 if (res) return true;
8889 }
8890
8891 98 arg = arg->real_item();
8892
2/2
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✓ Branch 1 taken 94 times.
 98 if (arg->type() != FIELD_ITEM) {
8893 4 my_error(ER_BAD_FIELD_ERROR, MYF(0), "", "VALUES() function");
8894 4 return true;
8895 }
8896
8897 94 Item_field *field_arg = down_cast<Item_field *>(arg);
8898
8899
2/2
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✓ Branch 1 taken 2 times.
 94 if (thd->lex->in_update_value_clause &&
8900
2/2
✓ Branch 0 taken 91 times.
✓ Branch 1 taken 1 times.
 92 field_arg->field->table->insert_values) {
8901 91 Field *def_field = field_arg->field->clone(thd->mem_root);
8902
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✓ Branch 1 taken 91 times.
 91 if (def_field == nullptr) return true;
8903
8904 91 def_field->move_field_offset((ptrdiff_t)(def_field->table->insert_values -
8905 91 def_field->table->record[0]));
8906 91 m_rowbuffer_saved = def_field->table->insert_values;
8907 /*
8908 Put the original and cloned Field_blob objects in
8909 'insert_update_values_map' map. This will be used to make a
8910 separate copy of blob value, in case 'UPDATE' clause is executed in
8911 'INSERT...UPDATE' statement. See mysql_prepare_blob_values()
8912 for more info. We are only checking for MYSQL_TYPE_BLOB and
8913 MYSQL_TYPE_GEOMETRY. Sub types of blob like TINY BLOB, LONG BLOB, JSON,
8914 are internally stored are BLOB only. Same applies to geometry type.
8915 */
8916
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✓ Branch 2 taken 4 times.
✓ Branch 3 taken 87 times.
 178 if ((def_field->type() == MYSQL_TYPE_BLOB ||
8917
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✓ Branch 1 taken 87 times.
 87 def_field->type() == MYSQL_TYPE_GEOMETRY)) {
8918 try {
8919
1/2
✓ Branch 0 taken 4 times.
✗ Branch 1 not taken.
 4 thd->lex->insert_values_map(field_arg, def_field);
8920 ✗ } catch (std::bad_alloc const &) {
8921 ✗ my_error(ER_STD_BAD_ALLOC_ERROR, MYF(0), "", "fix_fields");
8922 ✗ return true;
8923 }
8924 }
8925
8926 91 set_field(def_field);
8927
8928 // Use same field name as the underlying field:
8929
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 91 times.
 91 assert(field_name == nullptr);
8930 91 field_name = arg->item_name.ptr();
8931
8932 // The VALUES function is deprecated.
8933
2/2
✓ Branch 0 taken 44 times.
✓ Branch 1 taken 47 times.
 91 if (m_is_values_function)
8934 44 push_deprecated_warn(
8935 thd, "VALUES function",
8936 "an alias (INSERT INTO ... VALUES (...) AS alias) and replace "
8937 "VALUES(col) in the ON DUPLICATE KEY UPDATE clause with alias.col");
8938 91 } else {
8939 // VALUES() is used out-of-scope - its value is always NULL
8940
2/4
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✗ Branch 3 not taken.
 3 Item *const item = new Item_null(this->item_name);
8941
1/2
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✓ Branch 1 taken 3 times.
 3 if (item == nullptr) return true;
8942 3 *reference = item;
8943
8944 // Ensure the object is not handled by bind_fields()
8945 3 arg = nullptr;
8946
8947 // The VALUES function is deprecated. It always returns NULL in this
8948 // context, but if it is inside an ON DUPLICATE KEY UPDATE clause, the user
8949 // probably meant something else. In that case, suggest an alternative
8950 // syntax which doesn't always return NULL.
8951
1/2
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✓ Branch 1 taken 3 times.
 3 assert(m_is_values_function);
8952
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 2 times.
 3 if (thd->lex->in_update_value_clause) {
8953 1 push_warning(thd, Sql_condition::SL_WARNING, ER_WARN_DEPRECATED_SYNTAX,
8954 ER_THD(thd, ER_WARN_DEPRECATED_VALUES_FUNCTION_ALWAYS_NULL));
8955 } else {
8956 2 push_deprecated_warn_no_replacement(thd, "VALUES function");
8957 }
8958 }
8959 94 return false;
8960 }
8961
8962 1014 void Item_insert_value::bind_fields() {
8963
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✓ Branch 1 taken 1014 times.
 1014 if (arg == nullptr) return;
8964
1/2
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✓ Branch 1 taken 1014 times.
 1014 if (!fixed) return;
8965
8966
1/2
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✓ Branch 1 taken 1014 times.
 1014 assert(table_ref->table->insert_values);
8967
8968 // Bind field to the current TABLE object
8969 1014 field->table = table_ref->table;
8970
8971 1014 field->move_field_offset(
8972 1014 (ptrdiff_t)(field->table->insert_values - m_rowbuffer_saved));
8973 1014 m_rowbuffer_saved = field->table->insert_values;
8974
8975 1014 Item_field *field_arg = down_cast<Item_field *>(arg->real_item());
8976
4/4
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✓ Branch 1 taken 999 times.
✓ Branch 2 taken 999 times.
✓ Branch 3 taken 15 times.
 1029 if ((field->type() == MYSQL_TYPE_BLOB ||
8977
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 15 times.
 15 field->type() == MYSQL_TYPE_GEOMETRY)) {
8978 999 current_thd->lex->insert_values_map(field_arg, field);
8979 }
8980
8981 1014 set_result_field(field);
8982 }
8983
8984 1124 void Item_insert_value::cleanup() {
8985 // Disconnect from the TABLE object
8986
2/2
✓ Branch 0 taken 1105 times.
✓ Branch 1 taken 19 times.
 1124 if (field != nullptr) field->table = nullptr;
8987 1124 Item::cleanup();
8988 1124 }
8989
8990 ✗ void Item_insert_value::print(const THD *thd, String *str,
8991 enum_query_type query_type) const {
8992 ✗ str->append(STRING_WITH_LEN("values("));
8993 ✗ arg->print(thd, str, query_type);
8994 ✗ str->append(')');
8995 }
8996
8997 /**
8998 Find index of Field object which will be appropriate for item
8999 representing field of row being changed in trigger.
9000
9001 @param table_triggers Table_trigger_field_support instance. Do not use
9002 TABLE::triggers as it might be not initialized at
9003 the moment.
9004 @param table_grant_info GRANT_INFO of the subject table
9005
9006 @note
9007 This function does almost the same as fix_fields() for Item_field but is
9008 invoked right after trigger definition parsing. Since at this stage we can't
9009 say exactly what Field object (corresponding to TABLE::record[0] or
9010 TABLE::record[1]) should be bound to this Item, we only find out index of
9011 the Field and then select concrete Field object in fix_fields() (by that
9012 time Table_trigger_dispatcher::old_field/ new_field should point to proper
9013 array of Fields). It also binds Item_trigger_field to
9014 Table_trigger_field_support object for table of trigger which uses this
9015 item.
9016 Another difference is that the field is not marked in read_set/write_set.
9017 */
9018
9019 49063 void Item_trigger_field::setup_field(
9020 Table_trigger_field_support *table_triggers, GRANT_INFO *table_grant_info) {
9021 /*
9022 Try to find field by its name and if it will be found
9023 set field_idx properly.
9024 */
9025 49063 (void)find_field_in_table(table_triggers->get_subject_table(), field_name,
9026 false, &field_idx);
9027 49064 triggers = table_triggers;
9028 49064 table_grants = table_grant_info;
9029 49064 }
9030
9031 17 bool Item_trigger_field::eq(const Item *item, bool) const {
9032 17 return item->type() == TRIGGER_FIELD_ITEM &&
9033 16 trigger_var_type ==
9034
3/4
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✗ Branch 3 not taken.
 33 down_cast<const Item_trigger_field *>(item)->trigger_var_type &&
9035
1/2
✓ Branch 0 taken 16 times.
✗ Branch 1 not taken.
 33 !my_strcasecmp(
9036 system_charset_info, field_name,
9037 down_cast<const Item_trigger_field *>(item)->field_name);
9038 }
9039
9040 6590 bool Item_trigger_field::set_value(THD *thd, sp_rcontext * /*ctx*/, Item **it) {
9041 6590 Item *item = sp_prepare_func_item(thd, it);
9042
2/2
✓ Branch 0 taken 5 times.
✓ Branch 1 taken 6585 times.
 6590 if (item == nullptr) return true;
9043
9044
2/2
✓ Branch 0 taken 1313 times.
✓ Branch 1 taken 5272 times.
 6585 if (!fixed) {
9045
1/2
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✗ Branch 1 not taken.
 1313 Prepared_stmt_arena_holder ps_arena_holder(thd);
9046
9047
3/4
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✓ Branch 2 taken 26 times.
✓ Branch 3 taken 1287 times.
 1313 if (fix_fields(thd, nullptr)) return true;
9048
2/2
✓ Branch 0 taken 1287 times.
✓ Branch 1 taken 26 times.
 1313 } else {
9049
2/2
✓ Branch 0 taken 8 times.
✓ Branch 1 taken 5264 times.
 5272 if (walk(&Item::check_column_privileges, enum_walk::PREFIX,
9050 pointer_cast<uchar *>(thd)))
9051 8 return true;
9052 }
9053
9054 // NOTE: field->table->copy_blobs should be false here, but let's
9055 // remember the value at runtime to avoid subtle bugs.
9056 6551 bool copy_blobs_saved = field->table->copy_blobs;
9057
9058 6551 field->table->copy_blobs = true;
9059
9060 6551 int err_code = item->save_in_field(field, false);
9061
9062 6551 field->table->copy_blobs = copy_blobs_saved;
9063
9064 6551 return err_code < 0;
9065 }
9066
9067 14706 bool Item_trigger_field::fix_fields(THD *thd, Item **) {
9068 /*
9069 Since trigger is object tightly associated with TABLE object most
9070 of its set up can be performed during trigger loading i.e. trigger
9071 parsing! So we have little to do in fix_fields. :)
9072 */
9073
9074
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 14706 times.
 14706 assert(fixed == 0);
9075
9076 /* Set field. */
9077
9078
2/2
✓ Branch 0 taken 14676 times.
✓ Branch 1 taken 30 times.
 14706 if (field_idx != (uint)-1) {
9079 /*
9080 Check access privileges for the subject table. We check privileges only
9081 in runtime.
9082 */
9083
9084
2/2
✓ Branch 0 taken 8303 times.
✓ Branch 1 taken 6373 times.
 14676 if (table_grants) {
9085
2/2
✓ Branch 0 taken 48 times.
✓ Branch 1 taken 8255 times.
 16606 if (check_grant_column(
9086 8303 thd, table_grants, triggers->get_subject_table()->s->db.str,
9087 8303 triggers->get_subject_table()->s->table_name.str, field_name,
9088 strlen(field_name), thd->security_context(), want_privilege))
9089 48 return true;
9090 }
9091
9092 14628 field = triggers->get_trigger_variable_field(trigger_var_type, field_idx);
9093
9094 14628 set_field(field);
9095 14628 return false;
9096 }
9097
9098 30 my_error(ER_BAD_FIELD_ERROR, MYF(0), field_name,
9099
2/2
✓ Branch 0 taken 18 times.
✓ Branch 1 taken 12 times.
 30 (trigger_var_type == TRG_NEW_ROW) ? "NEW" : "OLD");
9100 30 return true;
9101 }
9102
9103 57432 void Item_trigger_field::bind_fields() {
9104 // Triggers are tied to a TABLE, so fields will never relocate.
9105
9106
2/2
✓ Branch 0 taken 2238 times.
✓ Branch 1 taken 55194 times.
 57432 if (!fixed) return;
9107
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 55194 times.
 55194 assert(field_idx != (uint)-1);
9108
9109 /*
9110 If the trigger's substatement using this object was previously invoked by a
9111 calling statement, and is now invoked by another, it may be that the two
9112 callers put the "old" record in a different place (for example, for a DELETE
9113 trigger, REPLACE uses TABLE::record[1] while DELETE uses TABLE::record[0],
9114 see the argument old_row_is_record1 in
9115 Table_trigger_dispatcher::process_triggers()). Thus 'field' needs an update
9116 for the second caller.
9117 */
9118
9119 55194 field = triggers->get_trigger_variable_field(trigger_var_type, field_idx);
9120
9121 55194 set_field(field);
9122 }
9123
9124 39377 bool Item_trigger_field::check_column_privileges(uchar *arg) {
9125 39377 THD *const thd = pointer_cast<THD *>(arg);
9126 39377 TABLE *table = triggers->get_subject_table();
9127
2/2
✓ Branch 0 taken 9 times.
✓ Branch 1 taken 39368 times.
 78754 if (check_grant_column(thd, table_grants, table->s->db.str,
9128 39377 table->s->table_name.str, field_name,
9129 strlen(field_name), thd->security_context(),
9130 want_privilege))
9131 9 return true;
9132 39368 return false;
9133 }
9134
9135 8 void Item_trigger_field::print(const THD *, String *str,
9136 enum_query_type) const {
9137
1/2
✓ Branch 0 taken 8 times.
✗ Branch 1 not taken.
 8 str->append((trigger_var_type == TRG_NEW_ROW) ? "NEW" : "OLD", 3);
9138 8 str->append('.');
9139
1/2
✓ Branch 0 taken 8 times.
✗ Branch 1 not taken.
 8 str->append(field_name);
9140 8 }
9141
9142 63551 void Item_trigger_field::cleanup() {
9143 /*
9144 A trigger is bound to a TABLE, so the TABLE_LIST may vary between executions
9145 */
9146 63551 table_ref = nullptr;
9147
9148 63551 Item::cleanup();
9149 63551 }
9150
9151 165345057 Item_result item_cmp_type(Item_result a, Item_result b) {
9152
2/2
✓ Branch 0 taken 165147816 times.
✓ Branch 1 taken 197241 times.
 165345057 if (a == b) {
9153
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 165147816 times.
 165147816 assert(a != INVALID_RESULT);
9154 165147816 return a;
9155
3/4
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✗ Branch 1 not taken.
✓ Branch 2 taken 16 times.
✓ Branch 3 taken 197234 times.
 197241 } else if (a == ROW_RESULT || b == ROW_RESULT) {
9156 7 return ROW_RESULT;
9157 }
9158
6/6
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✓ Branch 1 taken 83066 times.
✓ Branch 2 taken 47005 times.
✓ Branch 3 taken 67163 times.
✓ Branch 4 taken 84662 times.
✓ Branch 5 taken 45409 times.
 197234 if ((a == INT_RESULT || a == DECIMAL_RESULT) &&
9159
2/2
✓ Branch 0 taken 4590 times.
✓ Branch 1 taken 80072 times.
 84662 (b == INT_RESULT || b == DECIMAL_RESULT)) {
9160 49999 return DECIMAL_RESULT;
9161 }
9162 147235 return REAL_RESULT;
9163 }
9164
9165 /**
9166 Substitute a const item with a simpler const item, if possible.
9167
9168 @param thd Current session.
9169 @param[in,out] ref Const item to be processed, contains simplest possible
9170 item on return.
9171 @param comp_item Item that provides result type for generated const item
9172
9173 @returns false if success, true if error
9174 */
9175
9176 150733 bool resolve_const_item(THD *thd, Item **ref, Item *comp_item) {
9177 150733 Item *item = *ref;
9178
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 150733 times.
 150733 assert(item->const_item());
9179
9180 150733 Item *new_item = nullptr;
9181
2/2
✓ Branch 0 taken 150316 times.
✓ Branch 1 taken 417 times.
 150733 if (item->basic_const_item()) return false; // Can't be better
9182 Item_result res_type =
9183 417 item_cmp_type(comp_item->result_type(), item->result_type());
9184
2/6
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✓ Branch 1 taken 39 times.
✗ Branch 2 not taken.
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✗ Branch 5 not taken.
 417 switch (res_type) {
9185 378 case STRING_RESULT: {
9186
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 376 times.
 378 if (item->data_type() == MYSQL_TYPE_JSON) {
9187 2 auto wr = make_unique_destroy_only<Json_wrapper>(thd->mem_root);
9188
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
 2 if (wr == nullptr) return true;
9189
3/4
✓ Branch 0 taken 2 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 1 times.
✓ Branch 3 taken 1 times.
 2 if (item->val_json(wr.get())) return true;
9190
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 if (item->null_value)
9191 ✗ new_item = new Item_null(item->item_name);
9192 else
9193
2/4
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✗ Branch 1 not taken.
✓ Branch 2 taken 1 times.
✗ Branch 3 not taken.
 1 new_item = new Item_json(std::move(wr), item->item_name);
9194 1 break;
9195
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 1 times.
 2 }
9196 char buff[MAX_FIELD_WIDTH];
9197 376 String tmp(buff, sizeof(buff), &my_charset_bin), *result;
9198
1/2
✓ Branch 0 taken 376 times.
✗ Branch 1 not taken.
 376 result = item->val_str(&tmp);
9199
2/4
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✗ Branch 1 not taken.
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✓ Branch 3 taken 376 times.
 376 if (thd->is_error()) return true;
9200
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 375 times.
 376 if (item->null_value)
9201
2/4
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✗ Branch 1 not taken.
✓ Branch 2 taken 1 times.
✗ Branch 3 not taken.
 1 new_item = new Item_null(item->item_name);
9202
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 375 times.
 375 else if (item->is_temporal()) {
9203 ✗ enum_field_types type = item->data_type() == MYSQL_TYPE_TIMESTAMP
9204 ✗ ? MYSQL_TYPE_DATETIME
9205 ✗ : item->data_type();
9206 ✗ new_item = create_temporal_literal(thd, result->ptr(), result->length(),
9207 result->charset(), type, true);
9208 } else {
9209 375 size_t length = result->length();
9210
1/2
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✗ Branch 1 not taken.
 375 char *tmp_str = sql_strmake(result->ptr(), length);
9211
1/2
✓ Branch 0 taken 375 times.
✗ Branch 1 not taken.
 750 new_item = new Item_string(item->item_name, tmp_str, length,
9212
1/2
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✗ Branch 1 not taken.
 750 result->charset());
9213 }
9214 376 break;
9215
1/2
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✓ Branch 1 taken 376 times.
 376 }
9216 39 case INT_RESULT: {
9217 39 longlong result = item->val_int();
9218
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 39 times.
 39 if (thd->is_error()) return true;
9219 39 uint length = item->max_length;
9220 39 bool null_value = item->null_value;
9221
2/2
✓ Branch 0 taken 8 times.
✓ Branch 1 taken 31 times.
 39 if (null_value)
9222
2/4
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✗ Branch 3 not taken.
 8 new_item = new Item_null(item->item_name);
9223
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 31 times.
 31 else if (item->unsigned_flag)
9224 ✗ new_item = new Item_uint(item->item_name, result, length);
9225 else
9226
2/4
✓ Branch 0 taken 31 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 31 times.
✗ Branch 3 not taken.
 31 new_item = new Item_int(item->item_name, result, length);
9227 39 break;
9228 }
9229 ✗ case ROW_RESULT: {
9230 /*
9231 Substitute constants only in Item_rows. Don't affect other Items
9232 with ROW_RESULT (eg Item_singlerow_subselect).
9233
9234 For such Items more optimal is to detect if it is constant and replace
9235 it with Item_row. This would optimize queries like this:
9236 SELECT * FROM t1 WHERE (a,b) = (SELECT a,b FROM t2 LIMIT 1);
9237 */
9238 ✗ if (!(item->type() == Item::ROW_ITEM &&
9239 ✗ comp_item->type() == Item::ROW_ITEM))
9240 ✗ return false;
9241 ✗ Item_row *item_row = (Item_row *)item;
9242 ✗ Item_row *comp_item_row = (Item_row *)comp_item;
9243 /*
9244 If item and comp_item are both Item_rows and have same number of cols
9245 then process items in Item_row one by one.
9246 We can't ignore NULL values here as this item may be used with <=>, in
9247 which case NULL's are significant.
9248 */
9249 ✗ assert(item->result_type() == comp_item->result_type());
9250 ✗ assert(item_row->cols() == comp_item_row->cols());
9251 ✗ uint col = item_row->cols();
9252 ✗ while (col-- > 0)
9253 ✗ if (resolve_const_item(thd, item_row->addr(col),
9254 ✗ comp_item_row->element_index(col)))
9255 ✗ return true;
9256 ✗ break;
9257 }
9258 ✗ case REAL_RESULT: { // It must REAL_RESULT
9259 ✗ double result = item->val_real();
9260 ✗ if (thd->is_error()) return true;
9261 ✗ uint length = item->max_length, decimals = item->decimals;
9262 ✗ bool null_value = item->null_value;
9263 ✗ new_item = (null_value ? (Item *)new Item_null(item->item_name)
9264 : (Item *)new Item_float(item->item_name, result,
9265 ✗ decimals, length));
9266 ✗ break;
9267 }
9268 ✗ case DECIMAL_RESULT: {
9269 ✗ my_decimal decimal_value;
9270 ✗ my_decimal *result = item->val_decimal(&decimal_value);
9271 ✗ if (thd->is_error()) return true;
9272 ✗ bool null_value = item->null_value;
9273 ✗ new_item = (null_value ? (Item *)new Item_null(item->item_name)
9274 : (Item *)new Item_decimal(item->item_name, result,
9275 ✗ item->decimals,
9276 ✗ item->max_length));
9277 ✗ break;
9278 }
9279 ✗ default:
9280 ✗ assert(0);
9281 }
9282
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 416 times.
 416 if (new_item == nullptr) return true;
9283
9284 416 *ref = new_item;
9285
9286 416 return false;
9287 }
9288
9289 /**
9290 Compare the value stored in field with the expression from the query.
9291
9292 @param thd Current session.
9293 @param field Field which the Item is stored in after conversion
9294 @param item Original expression from query
9295
9296 @return Returns an integer greater than, equal to, or less than 0 if
9297 the value stored in the field is greater than, equal to,
9298 or less than the original Item. A 0 may also be returned if
9299 out of memory.
9300
9301 @note We use this in the range optimizer/partition pruning,
9302 because in some cases we can't store the value in the field
9303 without some precision/character loss.
9304
9305 We similarly use it to verify that expressions like
9306 BIGINT_FIELD @<cmp@> @<literal value@>
9307 is done correctly (as int/decimal/float according to literal type).
9308 */
9309
9310 10220748 int stored_field_cmp_to_item(THD *thd, Field *field, Item *item) {
9311 Item_result res_type =
9312 10220748 item_cmp_type(field->result_type(), item->result_type());
9313
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 10221153 if (field->type() == MYSQL_TYPE_TIME &&
9314 403 item->data_type() == MYSQL_TYPE_TIME) {
9315 395 longlong field_value = field->val_time_temporal();
9316 395 longlong item_value = item->val_time_temporal();
9317
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 395 return field_value < item_value ? -1 : field_value > item_value ? 1 : 0;
9318 }
9319
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✓ Branch 4 taken 3256 times.
✓ Branch 5 taken 10217098 times.
 10220355 if (is_temporal_type_with_date(field->type()) && item->is_temporal()) {
9320 /*
9321 Note, in case of TIME data type we also go here
9322 and call item->val_date_temporal(), because we want
9323 TIME to be converted to DATE/DATETIME properly.
9324 Only non-temporal data types go though get_mysql_time_from_str()
9325 in the below code branch.
9326 */
9327 3256 longlong field_value = field->val_date_temporal();
9328 3256 longlong item_value = item->val_date_temporal();
9329
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✓ Branch 3 taken 3169 times.
 3256 return field_value < item_value ? -1 : field_value > item_value ? 1 : 0;
9330 }
9331
2/2
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✓ Branch 1 taken 47987 times.
 10217098 if (res_type == STRING_RESULT) {
9332 char item_buff[MAX_FIELD_WIDTH];
9333 char field_buff[MAX_FIELD_WIDTH];
9334
9335 10169111 String item_tmp(item_buff, sizeof(item_buff), &my_charset_bin);
9336 10169111 String field_tmp(field_buff, sizeof(field_buff), &my_charset_bin);
9337
1/2
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✗ Branch 1 not taken.
 10169111 String *item_result = item->val_str(&item_tmp);
9338 /*
9339 Some implementations of Item::val_str(String*) actually modify
9340 the field Item::null_value, hence we can't check it earlier.
9341 */
9342
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 10169111 if (item->null_value) return 0;
9343
1/2
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✗ Branch 1 not taken.
 10169111 String *field_result = field->val_str(&field_tmp);
9344
9345
3/4
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 10169111 if (is_temporal_type_with_date(field->type())) {
9346 enum_mysql_timestamp_type type =
9347
1/2
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✗ Branch 1 not taken.
 1218 field_type_to_timestamp_type(field->type());
9348 1218 const char *field_name = field->field_name;
9349 MYSQL_TIME field_time, item_time;
9350
1/2
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✗ Branch 1 not taken.
 1218 get_mysql_time_from_str(thd, field_result, type, field_name, &field_time);
9351
1/2
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✗ Branch 1 not taken.
 1218 get_mysql_time_from_str(thd, item_result, type, field_name, &item_time);
9352 /*
9353 If the string represents a UTC timestamp (with timezone
9354 offset), convert it to a datetime in the current time zone.
9355 */
9356
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 1218 if (item_time.time_type == MYSQL_TIMESTAMP_DATETIME_TZ)
9357
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 4 convert_time_zone_displacement(current_thd->time_zone(), &item_time);
9358
9359
2/4
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✗ Branch 3 not taken.
 1218 assert(field_time.time_type != MYSQL_TIMESTAMP_DATETIME_TZ &&
9360 item_time.time_type != MYSQL_TIMESTAMP_DATETIME_TZ);
9361
1/2
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 1218 return my_time_compare(field_time, item_time);
9362 }
9363
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 10167893 return sortcmp(field_result, item_result, field->charset());
9364 10169111 }
9365
2/2
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✓ Branch 1 taken 3555 times.
 47987 if (res_type == INT_RESULT) return 0; // Both are of type int
9366
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✓ Branch 1 taken 2848 times.
 3555 if (res_type == DECIMAL_RESULT) {
9367 707 my_decimal item_buf, *item_val, field_buf, *field_val;
9368
1/2
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✗ Branch 1 not taken.
 707 item_val = item->val_decimal(&item_buf);
9369
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 707 if (item->null_value) return 0;
9370
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✗ Branch 1 not taken.
 707 field_val = field->val_decimal(&field_buf);
9371
1/2
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✗ Branch 1 not taken.
 707 return my_decimal_cmp(field_val, item_val);
9372 707 }
9373 /*
9374 The patch for Bug#13463415 started using this function for comparing
9375 BIGINTs. That uncovered a bug in Visual Studio 32bit optimized mode.
9376 Prefixing the auto variables with volatile fixes the problem....
9377 */
9378 2848 volatile double result = item->val_real();
9379
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✓ Branch 1 taken 2847 times.
 2847 if (item->null_value) return 0;
9380 2847 volatile double field_result = field->val_real();
9381
2/2
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✓ Branch 1 taken 2786 times.
 2848 if (field_result < result)
9382 62 return -1;
9383
2/2
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✓ Branch 1 taken 1590 times.
 2786 else if (field_result > result)
9384 1196 return 1;
9385 1590 return 0;
9386 }
9387
9388 345107 Item_cache *Item_cache::get_cache(const Item *item) {
9389 345107 return get_cache(item, item->result_type());
9390 }
9391
9392 /**
9393 Get a cache item of given type.
9394
9395 @param item value to be cached
9396 @param type required type of cache
9397
9398 @return cache item
9399 */
9400
9401 399131 Item_cache *Item_cache::get_cache(const Item *item, const Item_result type) {
9402
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✓ Branch 4 taken 154 times.
✓ Branch 5 taken 1 times.
 399131 switch (type) {
9403 315833 case INT_RESULT:
9404 /*
9405 When it's an item of MYSQL_TYPE_BIT, we need to retain its result
9406 as bit format instead of an integer.
9407 */
9408
2/2
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✓ Branch 1 taken 315544 times.
 315833 if (item->data_type() == MYSQL_TYPE_BIT)
9409
2/4
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✗ Branch 3 not taken.
 289 return new Item_cache_bit(item->data_type());
9410
2/4
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 315544 return new Item_cache_int(item->data_type());
9411 53351 case REAL_RESULT:
9412
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✗ Branch 1 not taken.
 106702 return new Item_cache_real();
9413 2561 case DECIMAL_RESULT:
9414
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 5122 return new Item_cache_decimal();
9415 27231 case STRING_RESULT:
9416 /* Not all functions that return DATE/TIME are actually DATE/TIME funcs.
9417 */
9418
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 27231 if (item->is_temporal())
9419
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 1512 return new Item_cache_datetime(item->data_type());
9420
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✗ Branch 3 not taken.
 27327 if (item->data_type() == MYSQL_TYPE_JSON) return new Item_cache_json();
9421
2/4
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 24111 return new Item_cache_str(item);
9422 154 case ROW_RESULT:
9423
1/2
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✗ Branch 1 not taken.
 308 return new Item_cache_row();
9424 1 default:
9425 // should never be in real life
9426 1 assert(0);
9427 return nullptr;
9428 }
9429 }
9430
9431 840989 void Item_cache::store(Item *item) {
9432
2/2
✓ Branch 0 taken 691285 times.
✓ Branch 1 taken 149706 times.
 840989 if (current_thd->lex->is_exec_started())
9433 691285 current_thd->change_item_tree(&example, item);
9434 else
9435 149706 example = item;
9436
2/2
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 840992 if (!item) {
9437
1/2
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✓ Branch 1 taken 42189 times.
 42189 assert(is_nullable());
9438 42189 null_value = true;
9439 }
9440 840992 value_cached = false;
9441 840992 }
9442
9443 2291 void Item_cache::print(const THD *thd, String *str,
9444 enum_query_type query_type) const {
9445 2291 str->append(STRING_WITH_LEN("<cache>("));
9446
1/2
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✗ Branch 1 not taken.
 2291 if (example)
9447 2291 example->print(thd, str, query_type);
9448 else
9449 ✗ Item::print(thd, str, query_type);
9450 2291 str->append(')');
9451 2291 }
9452
9453 4480 bool Item_cache::walk(Item_processor processor, enum_walk walk, uchar *arg) {
9454
3/4
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✗ Branch 3 not taken.
 5631 return ((walk & enum_walk::PREFIX) && (this->*processor)(arg)) ||
9455
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✓ Branch 7 taken 1054 times.
 13489 (example && example->walk(processor, walk, arg)) ||
9456
4/4
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✓ Branch 2 taken 14 times.
✓ Branch 3 taken 3388 times.
 12338 ((walk & enum_walk::POSTFIX) && (this->*processor)(arg));
9457 }
9458
9459 155895225 bool Item_cache::has_value() {
9460
6/6
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✓ Branch 4 taken 155895221 times.
✓ Branch 5 taken 4 times.
 155895225 if (value_cached || cache_value()) {
9461 /*
9462 Only expect NULL if the cache is nullable, or if an error was
9463 raised when reading the value into the cache.
9464 */
9465
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 155895221 assert(!null_value || is_nullable() || current_thd->is_error());
9466 155895221 return !null_value;
9467 }
9468 4 return false;
9469 }
9470
9471 1419661 void Item_cache::cleanup() {
9472 /*
9473 In case the cache wraps a dynamic parameter, user variable (=> there is an
9474 'example' item), any next execution should cache the new value.
9475 If no 'example', caching is done through store_value() and that's for
9476 objects which are constant over all executions.
9477 */
9478
2/2
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✓ Branch 1 taken 46117 times.
 1419661 if (example != nullptr) clear();
9479 1419659 Item::cleanup();
9480 1419662 }
9481
9482 76635994 bool Item_cache_int::cache_value() {
9483
1/2
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✓ Branch 1 taken 76635994 times.
 76635994 if (!example) return false;
9484 76635994 value_cached = true;
9485 76635994 value = example->val_int();
9486 76635996 null_value = example->null_value;
9487 76635996 unsigned_flag = example->unsigned_flag;
9488 76635996 return true;
9489 }
9490
9491 ✗ void Item_cache_int::store_value(Item *item, longlong val_arg) {
9492 /* An explicit values is given, save it. */
9493 ✗ value_cached = true;
9494 ✗ value = val_arg;
9495 ✗ null_value = item->null_value;
9496 ✗ unsigned_flag = item->unsigned_flag;
9497 }
9498
9499 102 String *Item_cache_int::val_str(String *str) {
9500
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 102 assert(fixed == 1);
9501
2/2
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✓ Branch 1 taken 100 times.
 102 if (!has_value()) return nullptr;
9502 100 str->set_int(value, unsigned_flag, default_charset());
9503 100 return str;
9504 }
9505
9506 2797 my_decimal *Item_cache_int::val_decimal(my_decimal *decimal_val) {
9507
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 2797 assert(fixed == 1);
9508
1/2
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✓ Branch 1 taken 2797 times.
 2797 if (!has_value()) return nullptr;
9509 2797 int2my_decimal(E_DEC_FATAL_ERROR, value, unsigned_flag, decimal_val);
9510 2797 return decimal_val;
9511 }
9512
9513 1121 double Item_cache_int::val_real() {
9514
1/2
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 1121 assert(fixed == 1);
9515
1/2
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✓ Branch 1 taken 1121 times.
 1121 if (!has_value()) return 0.0;
9516
2/2
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✓ Branch 1 taken 717 times.
 1121 if (unsigned_flag) return static_cast<unsigned long long>(value);
9517 717 return value;
9518 }
9519
9520 154403381 longlong Item_cache_int::val_int() {
9521
1/2
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✓ Branch 1 taken 154403381 times.
 154403381 assert(fixed == 1);
9522
2/2
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✓ Branch 1 taken 154403290 times.
 154403381 if (!has_value()) return 0;
9523 154403290 return value;
9524 }
9525
9526 6 String *Item_cache_bit::val_str(String *str) {
9527
1/2
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 6 assert(fixed);
9528
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 6 if (!has_value()) return nullptr;
9529
9530 char buff[sizeof(longlong)];
9531 6 mi_int8store(buff, value);
9532 6 uint offset = sizeof(longlong) - string_length();
9533
9534 // for BIT(N), copy last N bits from buff
9535 // (rounded up to an integral number of bytes)
9536 6 str->length(0);
9537
2/4
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 6 if (str->append(buff + offset, string_length())) return nullptr;
9538
9539 6 return str;
9540 }
9541
9542 5951 bool Item_cache_datetime::cache_value_int() {
9543
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 5951 times.
 5951 if (!example) return false;
9544
9545 5951 value_cached = true;
9546 // Mark cached string value obsolete
9547 5951 str_value_cached = false;
9548
9549
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 5951 times.
 5951 assert(data_type() == example->data_type());
9550 5951 int_value = example->val_temporal_by_field_type();
9551 5951 null_value = example->null_value;
9552 5951 unsigned_flag = example->unsigned_flag;
9553
9554 5951 return true;
9555 }
9556
9557 8734 bool Item_cache_datetime::cache_value() {
9558
1/2
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✓ Branch 1 taken 8734 times.
 8734 if (!example) return false;
9559
9560
2/2
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✓ Branch 1 taken 3718 times.
 8734 if (cmp_context == INT_RESULT) return cache_value_int();
9561
9562 3718 str_value_cached = true;
9563 // Mark cached int value obsolete
9564 3718 value_cached = false;
9565 /* Assume here that the underlying item will do correct conversion.*/
9566 3718 String *res = example->val_str(&cached_string);
9567
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✓ Branch 3 taken 3067 times.
 3718 if (res && res != &cached_string) cached_string.copy(*res);
9568 3718 null_value = example->null_value;
9569 3718 unsigned_flag = example->unsigned_flag;
9570 3718 return true;
9571 }
9572
9573 5715 void Item_cache_datetime::store_value(Item *item, longlong val_arg) {
9574 /* An explicit values is given, save it. */
9575 5715 value_cached = true;
9576 5715 int_value = val_arg;
9577 5715 null_value = item->null_value;
9578 5715 unsigned_flag = item->unsigned_flag;
9579 5715 }
9580
9581 7425 void Item_cache_datetime::store(Item *item) {
9582 7425 Item_cache::store(item);
9583 7425 str_value_cached = false;
9584 7425 }
9585
9586 5150 String *Item_cache_datetime::val_str(String *) {
9587
1/2
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 5150 assert(fixed == 1);
9588
9589
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 5150 if ((value_cached || str_value_cached) && null_value) return nullptr;
9590
9591
2/2
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✓ Branch 1 taken 3996 times.
 5150 if (!str_value_cached) {
9592 /*
9593 When it's possible the Item_cache_datetime uses INT datetime
9594 representation due to speed reasons. But still, it always has the STRING
9595 result type and thus it can be asked to return a string value.
9596 It is possible that at this time cached item doesn't contain correct
9597 string value, thus we have to convert cached int value to string and
9598 return it.
9599 */
9600
1/2
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 1154 if (value_cached) {
9601 MYSQL_TIME ltime;
9602
1/2
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✗ Branch 1 not taken.
 1154 TIME_from_longlong_packed(&ltime, data_type(), int_value);
9603 1154 if ((null_value =
9604 2308 my_TIME_to_str(&ltime, &cached_string,
9605
2/4
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 1154 min(decimals, uint8{DATETIME_MAX_DECIMALS}))))
9606 ✗ return nullptr;
9607 1154 str_value_cached = true;
9608 ✗ } else if (!cache_value() || null_value)
9609 ✗ return nullptr;
9610 }
9611 5150 return &cached_string;
9612 }
9613
9614 75 my_decimal *Item_cache_datetime::val_decimal(my_decimal *decimal_val) {
9615
1/2
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 75 assert(fixed == 1);
9616
9617
2/2
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 75 if (str_value_cached) {
9618
1/3
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 4 switch (data_type()) {
9619 ✗ case MYSQL_TYPE_TIME:
9620 ✗ return val_decimal_from_time(decimal_val);
9621 4 case MYSQL_TYPE_DATETIME:
9622 case MYSQL_TYPE_TIMESTAMP:
9623 case MYSQL_TYPE_DATE:
9624 4 return val_decimal_from_date(decimal_val);
9625 ✗ default:
9626 ✗ assert(0);
9627 return nullptr;
9628 }
9629 }
9630
9631
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 71 if ((!value_cached && !cache_value_int()) || null_value) return nullptr;
9632 71 return my_decimal_from_datetime_packed(decimal_val, data_type(), int_value);
9633 }
9634
9635 1948 bool Item_cache_datetime::get_date(MYSQL_TIME *ltime,
9636 my_time_flags_t fuzzydate) {
9637
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 1948 if ((value_cached || str_value_cached) && null_value) return true;
9638
9639
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 1948 if (str_value_cached) // TS-TODO: reuse MYSQL_TIME_cache eventually.
9640 1674 return get_date_from_string(ltime, fuzzydate);
9641
9642
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 274 if ((!value_cached && !cache_value_int()) || null_value)
9643 ✗ return (null_value = true);
9644
9645
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 274 switch (data_type()) {
9646 1 case MYSQL_TYPE_TIME: {
9647 MYSQL_TIME tm;
9648
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 1 TIME_from_longlong_time_packed(&tm, int_value);
9649
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 1 time_to_datetime(current_thd, &tm, ltime);
9650 1 return false;
9651 }
9652 74 case MYSQL_TYPE_DATE: {
9653 74 int warnings = 0;
9654
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 74 TIME_from_longlong_date_packed(ltime, int_value);
9655
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 74 return check_date(*ltime, non_zero_date(*ltime), fuzzydate, &warnings);
9656 }
9657 199 case MYSQL_TYPE_DATETIME:
9658 case MYSQL_TYPE_TIMESTAMP: {
9659 199 int warnings = 0;
9660
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 199 TIME_from_longlong_datetime_packed(ltime, int_value);
9661
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 199 return check_date(*ltime, non_zero_date(*ltime), fuzzydate, &warnings);
9662 }
9663 ✗ default:
9664 ✗ assert(0);
9665 }
9666 return true;
9667 }
9668
9669 107 bool Item_cache_datetime::get_time(MYSQL_TIME *ltime) {
9670
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 107 if ((value_cached || str_value_cached) && null_value) return true;
9671
9672
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 107 if (str_value_cached) // TS-TODO: reuse MYSQL_TIME_cache eventually.
9673 20 return get_time_from_string(ltime);
9674
9675
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 87 if ((!value_cached && !cache_value_int()) || null_value) return true;
9676
9677
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 87 switch (data_type()) {
9678 86 case MYSQL_TYPE_TIME:
9679 86 TIME_from_longlong_time_packed(ltime, int_value);
9680 86 return false;
9681 1 case MYSQL_TYPE_DATE:
9682 1 set_zero_time(ltime, MYSQL_TIMESTAMP_TIME);
9683 1 return false;
9684 ✗ case MYSQL_TYPE_DATETIME:
9685 case MYSQL_TYPE_TIMESTAMP:
9686 ✗ TIME_from_longlong_datetime_packed(ltime, int_value);
9687 ✗ datetime_to_time(ltime);
9688 ✗ return false;
9689 ✗ default:
9690 ✗ assert(0);
9691 }
9692 return true;
9693 }
9694
9695 15 double Item_cache_datetime::val_real() { return val_real_from_decimal(); }
9696
9697 739 longlong Item_cache_datetime::val_time_temporal() {
9698
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 739 assert(fixed == 1);
9699
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 739 if ((!value_cached && !cache_value_int()) || null_value) return 0;
9700
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 731 if (is_temporal_with_date()) {
9701 /* Convert packed date to packed time */
9702 MYSQL_TIME ltime;
9703 ✗ return get_time_from_date(&ltime)
9704 ✗ ? 0
9705 ✗ : TIME_to_longlong_packed(ltime, data_type());
9706 }
9707 731 return int_value;
9708 }
9709
9710 6667 longlong Item_cache_datetime::val_date_temporal() {
9711
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 6667 assert(fixed == 1);
9712
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 6667 if ((!value_cached && !cache_value_int()) || null_value) return 0;
9713
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 6656 if (data_type() == MYSQL_TYPE_TIME) {
9714 /* Convert packed time to packed date */
9715 MYSQL_TIME ltime;
9716
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 18 return get_date_from_time(&ltime) ? 0
9717
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 18 : TIME_to_longlong_datetime_packed(ltime);
9718 }
9719 6638 return int_value;
9720 }
9721
9722 20 longlong Item_cache_datetime::val_int() { return val_int_from_decimal(); }
9723
9724 1653 Item_cache_json::Item_cache_json()
9725 : Item_cache(MYSQL_TYPE_JSON),
9726
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 3306 m_value(new (*THR_MALLOC) Json_wrapper()),
9727
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 3306 m_is_sorted(false) {}
9728
9729 6612 Item_cache_json::~Item_cache_json() { destroy(m_value); }
9730
9731 /**
9732 Read the JSON value and cache it.
9733 @return true if the value was successfully cached, false otherwise
9734 */
9735 1900 bool Item_cache_json::cache_value() {
9736
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 1900 if (!example || !m_value) return false;
9737
9738
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 1900 if (json_value(example, m_value, &value_cached)) { // Error
9739 11 null_value = true; // Set the NULL indicator to prevent reading the value
9740 11 return false;
9741 }
9742 1889 null_value = example->null_value;
9743
9744
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 1889 if (value_cached && !null_value) {
9745 // the row buffer might change, so need own copy
9746 1653 m_value->to_dom();
9747 }
9748 1889 m_is_sorted = false;
9749 1889 return value_cached;
9750 }
9751
9752 31 void Item_cache_json::store_value(Item *expr, Json_wrapper *wr) {
9753 31 value_cached = true;
9754
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 31 if ((null_value = expr->null_value))
9755 ✗ m_value = nullptr;
9756 else {
9757 31 *m_value = *wr;
9758 // the row buffer might change, so need own copy
9759 31 m_value->to_dom();
9760 }
9761 31 m_is_sorted = false;
9762 31 }
9763
9764 /**
9765 Copy the cached JSON value into a wrapper.
9766 @param[out] wr the wrapper that receives the JSON value
9767 */
9768 99709 bool Item_cache_json::val_json(Json_wrapper *wr) {
9769
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 99709 if (has_value() && !null_value) *wr = *m_value;
9770 99709 return current_thd->is_error();
9771 }
9772
9773 /// Get the name of the cached field of an Item_cache_json instance.
9774 1290 inline static const char *whence(const Item_field *cached_field) {
9775
2/2
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 1290 return cached_field != nullptr ? cached_field->field_name : "?";
9776 }
9777
9778 821 String *Item_cache_json::val_str(String *tmp) {
9779
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 821 if (has_value()) {
9780 820 tmp->length(0);
9781
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 820 m_value->to_string(tmp, true, whence(cached_field),
9782 JsonDocumentDefaultDepthHandler);
9783 820 return tmp;
9784 }
9785
9786 1 return nullptr;
9787 }
9788
9789 48 double Item_cache_json::val_real() {
9790 48 Json_wrapper wr;
9791
9792
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 48 if (val_json(&wr)) return 0.0;
9793
9794
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 48 if (null_value) return 0.0;
9795
9796
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 48 return wr.coerce_real(whence(cached_field));
9797 48 }
9798
9799 38 my_decimal *Item_cache_json::val_decimal(my_decimal *decimal_value) {
9800 38 Json_wrapper wr;
9801
9802
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 38 if (val_json(&wr)) return decimal_value;
9803
9804
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 37 if (null_value) return decimal_value;
9805
9806
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 37 return wr.coerce_decimal(decimal_value, whence(cached_field));
9807 38 }
9808
9809 107 bool Item_cache_json::get_date(MYSQL_TIME *ltime, my_time_flags_t) {
9810 107 Json_wrapper wr;
9811
9812
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 107 if (val_json(&wr)) return true;
9813
9814
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 107 if (null_value) return true;
9815
9816
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 107 return wr.coerce_date(ltime, whence(cached_field));
9817 107 }
9818
9819 37 bool Item_cache_json::get_time(MYSQL_TIME *ltime) {
9820 37 Json_wrapper wr;
9821
9822
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 37 if (val_json(&wr)) return true;
9823
9824
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 37 if (null_value) return true;
9825
9826
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 37 return wr.coerce_time(ltime, whence(cached_field));
9827 37 }
9828
9829 241 longlong Item_cache_json::val_int() {
9830 241 Json_wrapper wr;
9831
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 241 if (val_json(&wr)) return 0;
9832
9833
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 241 if (null_value) return true;
9834
9835
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 241 return wr.coerce_int(whence(cached_field));
9836 241 }
9837
9838 2 void Item_cache_json::sort() {
9839
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 2 assert(!m_is_sorted);
9840
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 2 if (has_value() && m_value->type() == enum_json_type::J_ARRAY) {
9841 2 m_value->sort();
9842 2 m_is_sorted = true;
9843 }
9844 2 }
9845
9846 64859 bool Item_cache_real::cache_value() {
9847
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 64859 if (!example) return false;
9848 64859 value_cached = true;
9849 64859 value = example->val_real();
9850 64859 null_value = example->null_value;
9851 64859 return true;
9852 }
9853
9854 ✗ void Item_cache_real::store_value(Item *expr, double d) {
9855 ✗ value_cached = true;
9856 ✗ value = d;
9857 ✗ null_value = expr->null_value;
9858 }
9859
9860 158419 double Item_cache_real::val_real() {
9861
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 158419 assert(fixed == 1);
9862
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 158419 if (!has_value()) return 0.0;
9863 153679 return value;
9864 }
9865
9866 ✗ longlong Item_cache_real::val_int() {
9867 ✗ assert(fixed == 1);
9868 ✗ if (!has_value()) return 0;
9869 ✗ return (longlong)rint(value);
9870 }
9871
9872 58 String *Item_cache_real::val_str(String *str) {
9873
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 58 assert(fixed == 1);
9874
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 58 if (!has_value()) return nullptr;
9875 58 str->set_real(value, decimals, default_charset());
9876 58 return str;
9877 }
9878
9879 ✗ my_decimal *Item_cache_real::val_decimal(my_decimal *decimal_val) {
9880 ✗ assert(fixed == 1);
9881 ✗ if (!has_value()) return nullptr;
9882 ✗ double2my_decimal(E_DEC_FATAL_ERROR, value, decimal_val);
9883 ✗ return decimal_val;
9884 }
9885
9886 5212 bool Item_cache_decimal::cache_value() {
9887
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 5212 if (!example) return false;
9888 5212 value_cached = true;
9889 5212 my_decimal *val = example->val_decimal(&decimal_value);
9890
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 5212 if (!(null_value = example->null_value) && val != &decimal_value)
9891 368 my_decimal2decimal(val, &decimal_value);
9892 5212 return true;
9893 }
9894
9895 ✗ void Item_cache_decimal::store_value(Item *expr, my_decimal *d) {
9896 ✗ value_cached = true;
9897 ✗ null_value = expr->null_value;
9898 ✗ my_decimal cpy(*d);
9899 ✗ decimal_value.swap(cpy);
9900 }
9901
9902 14 double Item_cache_decimal::val_real() {
9903
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 14 assert(fixed);
9904 double res;
9905
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 14 if (!has_value()) return 0.0;
9906
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 14 my_decimal2double(E_DEC_FATAL_ERROR, &decimal_value, &res);
9907 14 return res;
9908 }
9909
9910 ✗ longlong Item_cache_decimal::val_int() {
9911 ✗ assert(fixed);
9912 longlong res;
9913 ✗ if (!has_value()) return 0;
9914 ✗ my_decimal2int(E_DEC_FATAL_ERROR, &decimal_value, unsigned_flag, &res);
9915 ✗ return res;
9916 }
9917
9918 288 String *Item_cache_decimal::val_str(String *str) {
9919
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 288 assert(fixed);
9920
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 288 if (!has_value()) return nullptr;
9921 288 my_decimal_round(E_DEC_FATAL_ERROR, &decimal_value, decimals, false,
9922 &decimal_value);
9923 288 my_decimal2string(E_DEC_FATAL_ERROR, &decimal_value, str);
9924 288 return str;
9925 }
9926
9927 253446 my_decimal *Item_cache_decimal::val_decimal(my_decimal *) {
9928
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 253446 assert(fixed);
9929
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 253446 if (!has_value()) return nullptr;
9930 253428 return &decimal_value;
9931 }
9932
9933 32449 bool Item_cache_str::cache_value() {
9934
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 32449 if (!example) return false;
9935 32449 value_cached = true;
9936 32449 value_buff.set(buffer, sizeof(buffer), example->collation.collation);
9937 32449 value = example->val_str(&value_buff);
9938
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 32449 if ((null_value = example->null_value))
9939 1301 value = nullptr;
9940
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 31148 else if (value != nullptr && value->ptr() != buffer) {
9941 /*
9942 We copy string value to avoid changing value if 'item' is table field
9943 in queries like following (where t1.c is varchar):
9944 select a,
9945 (select a,b,c from t1 where t1.a=t2.a) = ROW(a,2,'a'),
9946 (select c from t1 where a=t2.a)
9947 from t2;
9948 */
9949 29871 value_buff.copy(*value);
9950 29871 value = &value_buff;
9951 }
9952 32449 return true;
9953 }
9954
9955 ✗ void Item_cache_str::store_value(Item *expr, String &s) {
9956 ✗ value_cached = true;
9957 ✗ if ((null_value = expr->null_value))
9958 ✗ value = nullptr;
9959 else {
9960 ✗ value_buff.copy(s);
9961 ✗ value = &value_buff;
9962 }
9963 }
9964
9965 65 double Item_cache_str::val_real() {
9966
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 65 assert(fixed == 1);
9967 int err_not_used;
9968 const char *end_not_used;
9969
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 65 if (!has_value()) return 0.0;
9970
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 65 if (value)
9971
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 65 return my_strntod(value->charset(), value->ptr(), value->length(),
9972 &end_not_used, &err_not_used);
9973 ✗ return (double)0;
9974 }
9975
9976 ✗ longlong Item_cache_str::val_int() {
9977 ✗ assert(fixed == 1);
9978 int err;
9979 ✗ if (!has_value()) return 0;
9980 ✗ if (value)
9981 ✗ return my_strntoll(value->charset(), value->ptr(), value->length(), 10,
9982 nullptr, &err);
9983 else
9984 ✗ return (longlong)0;
9985 }
9986
9987 974995 String *Item_cache_str::val_str(String *) {
9988
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 974995 assert(fixed == 1);
9989
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 974995 if (!has_value()) return nullptr;
9990 974931 return value;
9991 }
9992
9993 1 my_decimal *Item_cache_str::val_decimal(my_decimal *decimal_val) {
9994
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 1 assert(fixed == 1);
9995
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 1 if (!has_value()) return nullptr;
9996
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 1 if (value)
9997 1 str2my_decimal(E_DEC_FATAL_ERROR, value->ptr(), value->length(),
9998 1 value->charset(), decimal_val);
9999 else
10000 ✗ decimal_val = nullptr;
10001 1 return decimal_val;
10002 }
10003
10004 650 type_conversion_status Item_cache_str::save_in_field_inner(
10005 Field *field, bool no_conversions) {
10006
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 650 if (!value_cached && !cache_value())
10007 ✗ return TYPE_ERR_BAD_VALUE; // Fatal: couldn't cache the value
10008
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 650 if (null_value)
10009 1 return set_field_to_null_with_conversions(field, no_conversions);
10010 const type_conversion_status res =
10011 649 Item_cache::save_in_field_inner(field, no_conversions);
10012
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 649 if (is_varbinary && field->type() == MYSQL_TYPE_STRING && value != nullptr &&
10013 ✗ value->length() < field->field_length)
10014 ✗ return TYPE_WARN_OUT_OF_RANGE;
10015 649 return res;
10016 }
10017
10018 154 bool Item_cache_row::allocate(uint num) {
10019 154 item_count = num;
10020 154 THD *thd = current_thd;
10021 308 return (!(values = (Item_cache **)thd->mem_calloc(sizeof(Item_cache *) *
10022 154 item_count)));
10023 }
10024
10025 302 bool Item_cache_row::setup(Item *item) {
10026 302 example = item;
10027
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 302 if (!values && allocate(item->cols())) return true;
10028
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 940 for (uint i = 0; i < item_count; i++) {
10029 638 Item *el = item->element_index(i);
10030 Item_cache *tmp;
10031
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 638 if (!(tmp = values[i] = Item_cache::get_cache(el))) return true;
10032 638 tmp->setup(el);
10033 638 add_accum_properties(tmp);
10034 }
10035 302 return false;
10036 }
10037
10038 2566 void Item_cache_row::store(Item *item) {
10039 2566 example = item;
10040
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 2566 if (!item) {
10041 ✗ assert(is_nullable());
10042 ✗ null_value = true;
10043 ✗ return;
10044 }
10045
2/2
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 7878 for (uint i = 0; i < item_count; i++)
10046 5312 values[i]->store(item->element_index(i));
10047 }
10048
10049 1263 bool Item_cache_row::cache_value() {
10050
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 1263 if (!example) return false;
10051 1263 value_cached = true;
10052 1263 example->bring_value();
10053 1263 null_value = example->null_value;
10054
10055 const bool cached_item_is_assigned =
10056
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 1263 example->type() != SUBSELECT_ITEM ||
10057 ✗ down_cast<Item_subselect *>(example)->assigned();
10058
10059
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 3879 for (uint i = 0; i < item_count; i++) {
10060
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 2616 if (!cached_item_is_assigned) {
10061 // Subquery with zero rows, so make cached item null also.
10062 ✗ values[i]->store_null();
10063 } else {
10064 2616 values[i]->cache_value();
10065 }
10066
10067 2616 null_value |= values[i]->null_value;
10068 }
10069 1263 return true;
10070 }
10071
10072 ✗ void Item_cache_row::illegal_method_call(const char *method
10073 [[maybe_unused]]) const {
10074 ✗ DBUG_TRACE;
10075 ✗ DBUG_PRINT("error", ("!!! %s method was called for row item", method));
10076 ✗ assert(0);
10077 my_error(ER_OPERAND_COLUMNS, MYF(0), 1);
10078 }
10079
10080 ✗ bool Item_cache_row::check_cols(uint c) {
10081 ✗ if (c != item_count) {
10082 ✗ my_error(ER_OPERAND_COLUMNS, MYF(0), c);
10083 ✗ return true;
10084 }
10085 ✗ return false;
10086 }
10087
10088 ✗ bool Item_cache_row::null_inside() {
10089 ✗ for (uint i = 0; i < item_count; i++) {
10090 ✗ if (values[i]->cols() > 1) {
10091 ✗ if (values[i]->null_inside()) return true;
10092 } else {
10093 ✗ if (values[i]->update_null_value() || values[i]->null_value) return true;
10094 }
10095 }
10096 ✗ return false;
10097 }
10098
10099 2 void Item_cache_row::bring_value() {
10100
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 2 if (!example) return;
10101 2 example->bring_value();
10102 2 null_value = example->null_value;
10103
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 4 for (uint i = 0; i < item_count; i++) values[i]->bring_value();
10104 }
10105
10106 78904 Item_aggregate_type::Item_aggregate_type(THD *thd, Item *item)
10107 78904 : Item(thd, item) {
10108
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 78904 assert(item->fixed);
10109 78904 set_nullable(item->is_nullable());
10110
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 78904 set_data_type(real_data_type(item));
10111
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 78904 set_typelib(item);
10112
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 78904 if (item->data_type() == MYSQL_TYPE_GEOMETRY)
10113
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 83 geometry_type = item->get_geometry_type();
10114 else
10115 78821 geometry_type = Field::GEOM_GEOMETRY;
10116 78904 }
10117
10118 /**
10119 Return expression type of Item_aggregate_type.
10120
10121 @return
10122 Item_result (type of internal MySQL expression result)
10123 */
10124
10125 501625 Item_result Item_aggregate_type::result_type() const {
10126 501625 return Field::result_merge_type(data_type());
10127 }
10128
10129 /**
10130 Find real data type of item.
10131
10132 @return
10133 data type which should be used to store item value
10134 */
10135
10136 15789121 static enum_field_types real_data_type(Item *item) {
10137 15789121 item = item->real_item();
10138
10139
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 15789121 switch (item->type()) {
10140 4737249 case Item::FIELD_ITEM: {
10141 /*
10142 Item_fields::field_type ask Field_type() but sometimes field return
10143 a different type, like for enum/set, so we need to ask real type.
10144 */
10145 4737249 Field *field = ((Item_field *)item)->field;
10146 4737249 enum_field_types type = field->real_type();
10147
2/2
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 4737249 if (field->is_created_from_null_item) return MYSQL_TYPE_NULL;
10148 /* work around about varchar type field detection */
10149
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 4737245 if (type == MYSQL_TYPE_STRING && field->type() == MYSQL_TYPE_VAR_STRING)
10150 ✗ return MYSQL_TYPE_VAR_STRING;
10151 4737245 return type;
10152 }
10153 14775 case Item::SUM_FUNC_ITEM: {
10154 /*
10155 Argument of aggregate function sometimes should be asked about field
10156 type
10157 */
10158 14775 Item_sum *item_sum = (Item_sum *)item;
10159
2/2
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 14775 if (item_sum->keep_field_type())
10160 53 return real_data_type(item_sum->get_arg(0));
10161 14722 break;
10162 }
10163 5451722 case Item::FUNC_ITEM:
10164
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 5451722 if (((Item_func *)item)->functype() == Item_func::GUSERVAR_FUNC) {
10165 /*
10166 There are work around of problem with changing variable type on the
10167 fly and variable always report "string" as field type to get
10168 acceptable information for client in send_field, so we make field
10169 type from expression type.
10170 */
10171
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 7918 switch (item->result_type()) {
10172 7871 case STRING_RESULT:
10173 7871 return MYSQL_TYPE_VARCHAR;
10174 43 case INT_RESULT:
10175 43 return MYSQL_TYPE_LONGLONG;
10176 ✗ case REAL_RESULT:
10177 ✗ return MYSQL_TYPE_DOUBLE;
10178 4 case DECIMAL_RESULT:
10179 4 return MYSQL_TYPE_NEWDECIMAL;
10180 ✗ case ROW_RESULT:
10181 default:
10182 ✗ assert(0);
10183 return MYSQL_TYPE_VARCHAR;
10184 }
10185 }
10186 5443804 break;
10187 5585375 default:
10188 5585375 break;
10189 }
10190 11043901 return item->data_type();
10191 }
10192
10193 /**
10194 Find field type which can carry current Item_aggregate_type type and
10195 type of given Item.
10196
10197 @param thd the thread/connection descriptor
10198 @param item given item to join its parameters with this item ones
10199
10200 @retval
10201 true error - types are incompatible
10202 @retval
10203 false OK
10204 */
10205
10206 219169 bool Item_aggregate_type::join_types(THD *thd, Item *item) {
10207
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 219169 DBUG_TRACE;
10208
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 219169 DBUG_PRINT("info:",
10209 ("was type %d len %d, dec %d name %s", data_type(), max_length,
10210 decimals, (item_name.is_set() ? item_name.ptr() : "<NULL>")));
10211
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 219169 DBUG_PRINT("info:", ("in type %d len %d, dec %d", real_data_type(item),
10212 item->max_length, item->decimals));
10213 /*
10214 aggregate_type() will modify the data type of this item. Create a copy of
10215 this item containing the original data type and other properties to ensure
10216 correct conversion from existing item types to aggregated type.
10217 */
10218
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 219169 Item *item_copy = new Item_metadata_copy(this);
10219
10220 /*
10221 Down the call stack when calling aggregate_string_properties(), we might
10222 end up in THD::change_item_tree() if we for instance need to convert the
10223 character set on one side of a union:
10224
10225 SELECT "foo" UNION SELECT CONVERT("foo" USING utf8mb3);
10226 might be converted into:
10227 SELECT CONVERT("foo" USING utf8mb3) UNION
10228 SELECT CONVERT("foo" USING utf8mb3);
10229
10230 If we are in a prepared statement or a stored routine (any non-conventional
10231 query that needs rollback of any item tree modifications), we need to
10232 remember what Item we changed ("foo" in this case) and where that Item is
10233 located (in the "args" array in this case) so we can roll back the changes
10234 done to the Item tree when the execution is done. When we enter the rollback
10235 code (THD::rollback_item_tree_changes()), the location of the Item need to
10236 be accessible, so that is why the "args" array must be allocated on a
10237 MEM_ROOT and not on the stack. Note that THD::change_item_tree() isn't
10238 necessary, since the Item array we are modifying isn't a part of the
10239 original Item tree.
10240 */
10241
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 219169 Item **args = new (thd->mem_root) Item *[2] { item_copy, item };
10242
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 219169 aggregate_type(make_array(&args[0], 2));
10243
10244
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 219169 Item_result merge_type = Field::result_merge_type(data_type());
10245
2/2
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 219169 if (merge_type == STRING_RESULT) {
10246
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✓ Branch 3 taken 201646 times.
 201649 if (aggregate_string_properties("UNION", args, 2)) return true;
10247 /*
10248 For geometry columns, we must also merge subtypes. If the
10249 subtypes are different, use GEOMETRY.
10250 */
10251
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 201825 if (data_type() == MYSQL_TYPE_GEOMETRY &&
10252 90 (item->data_type() != MYSQL_TYPE_GEOMETRY ||
10253
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 89 geometry_type != item->get_geometry_type()))
10254 62 geometry_type = Field::GEOM_GEOMETRY;
10255 } else
10256
1/2
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 17520 aggregate_num_type(merge_type, args, 2);
10257
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 219166 set_nullable(is_nullable() || item->is_nullable());
10258
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 219166 set_typelib(item);
10259
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 219166 DBUG_PRINT("info", ("become type: %d len: %u dec: %u", (int)data_type(),
10260 max_length, (uint)decimals));
10261 219166 return false;
10262 219169 }
10263
10264 /**
10265 Calculate length for merging result for given Item type.
10266
10267 @param item Item for length detection
10268
10269 @return
10270 length
10271 */
10272
10273 ✗ uint32 Item_aggregate_type::display_length(Item *item) {
10274 ✗ if (item->type() == Item::FIELD_ITEM)
10275 ✗ return ((Item_field *)item)->max_disp_length();
10276
10277 ✗ switch (item->data_type()) {
10278 ✗ case MYSQL_TYPE_DECIMAL:
10279 case MYSQL_TYPE_TIMESTAMP:
10280 case MYSQL_TYPE_DATE:
10281 case MYSQL_TYPE_TIME:
10282 case MYSQL_TYPE_DATETIME:
10283 case MYSQL_TYPE_YEAR:
10284 case MYSQL_TYPE_NEWDATE:
10285 case MYSQL_TYPE_VARCHAR:
10286 case MYSQL_TYPE_BIT:
10287 case MYSQL_TYPE_NEWDECIMAL:
10288 case MYSQL_TYPE_ENUM:
10289 case MYSQL_TYPE_SET:
10290 case MYSQL_TYPE_TINY_BLOB:
10291 case MYSQL_TYPE_MEDIUM_BLOB:
10292 case MYSQL_TYPE_LONG_BLOB:
10293 case MYSQL_TYPE_BLOB:
10294 case MYSQL_TYPE_VAR_STRING:
10295 case MYSQL_TYPE_STRING:
10296 case MYSQL_TYPE_GEOMETRY:
10297 case MYSQL_TYPE_JSON:
10298 ✗ return item->max_length;
10299 ✗ case MYSQL_TYPE_BOOL:
10300 ✗ return 5;
10301 ✗ case MYSQL_TYPE_TINY:
10302 ✗ return 4;
10303 ✗ case MYSQL_TYPE_SHORT:
10304 ✗ return 6;
10305 ✗ case MYSQL_TYPE_LONG:
10306 ✗ return MY_INT32_NUM_DECIMAL_DIGITS;
10307 ✗ case MYSQL_TYPE_FLOAT:
10308 ✗ return 25;
10309 ✗ case MYSQL_TYPE_DOUBLE:
10310 ✗ return 53;
10311 ✗ case MYSQL_TYPE_NULL:
10312 ✗ return 0;
10313 ✗ case MYSQL_TYPE_LONGLONG:
10314 ✗ return 20;
10315 ✗ case MYSQL_TYPE_INT24:
10316 ✗ return 8;
10317 ✗ case MYSQL_TYPE_INVALID:
10318 default:
10319 ✗ assert(0); // we should never go there
10320 return 0;
10321 }
10322 }
10323
10324 /**
10325 Make temporary table field according collected information about type
10326 of UNION result.
10327
10328 @param table temporary table for which we create fields
10329 @param strict If strict mode is on
10330
10331 @return
10332 created field
10333 */
10334
10335 153265 Field *Item_aggregate_type::make_field_by_type(TABLE *table, bool strict) {
10336 /*
10337 The field functions defines a field to be not null if null_ptr is not 0
10338 */
10339 Field *field;
10340
10341
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 153265 switch (data_type()) {
10342 4 case MYSQL_TYPE_ENUM:
10343
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 4 assert(m_typelib != nullptr);
10344
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 12 field = new (*THR_MALLOC)
10345 4 Field_enum(max_length, is_nullable(), item_name.ptr(),
10346 4 get_enum_pack_length(m_typelib->count), m_typelib,
10347
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 8 collation.collation);
10348
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 4 if (field) field->init(table);
10349 4 break;
10350 ✗ case MYSQL_TYPE_SET:
10351 ✗ assert(m_typelib != nullptr);
10352 ✗ field = new (*THR_MALLOC)
10353 ✗ Field_set(max_length, is_nullable(), item_name.ptr(),
10354 ✗ get_set_pack_length(m_typelib->count), m_typelib,
10355 ✗ collation.collation);
10356 ✗ if (field) field->init(table);
10357 ✗ break;
10358 8 case MYSQL_TYPE_NULL:
10359 8 field = make_string_field(table);
10360 8 break;
10361 153253 default:
10362 153253 field = tmp_table_field_from_field_type(table, false);
10363 153253 break;
10364 }
10365
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 153265 if (field == nullptr) return nullptr;
10366
10367
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 153304 if (strict && is_temporal_type_with_date(field->type()) &&
10368
2/2
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 39 !field->is_nullable()) {
10369 /*
10370 This function is used for CREATE SELECT UNION [ALL] ... , and, if
10371 expression is non-nullable, the resulting column is declared
10372 non-nullable with a default of 0. However, in strict mode, for dates,
10373 0000-00-00 is invalid; in that case, don't give any default.
10374 */
10375 18 field->set_flag(NO_DEFAULT_VALUE_FLAG);
10376 }
10377 153265 field->set_derivation(collation.derivation);
10378 153265 return field;
10379 }
10380
10381 /**
10382 Set typelib information for an aggregated enum/set field.
10383 Aggregation of typelib information is possible only if there is a single
10384 underlying item with type enum/set, all other items must be the NULL value.
10385 Aggregation is performed by calling this function repeatedly for each
10386 underlying item.
10387
10388 @param item Item for information collection
10389 */
10390 298070 void Item_aggregate_type::set_typelib(Item *item) {
10391
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 298070 if (data_type() != MYSQL_TYPE_ENUM && data_type() != MYSQL_TYPE_SET) return;
10392
10393 // Check that only one underlying item is not the NULL value
10394
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 599 if (m_typelib != nullptr) {
10395
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 1 assert(real_data_type(item) == MYSQL_TYPE_NULL);
10396 } else {
10397
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 598 assert(real_data_type(item) == MYSQL_TYPE_ENUM ||
10398 real_data_type(item) == MYSQL_TYPE_SET);
10399 598 m_typelib = item->get_typelib();
10400
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 598 assert(m_typelib != nullptr);
10401 }
10402 }
10403
10404 ✗ double Item_type_holder::val_real() {
10405 ✗ assert(0); // should never be called
10406 return 0.0;
10407 }
10408
10409 ✗ longlong Item_type_holder::val_int() {
10410 ✗ assert(0); // should never be called
10411 return 0;
10412 }
10413
10414 ✗ my_decimal *Item_type_holder::val_decimal(my_decimal *) {
10415 ✗ assert(0); // should never be called
10416 return nullptr;
10417 }
10418
10419 ✗ String *Item_type_holder::val_str(String *) {
10420 ✗ assert(0); // should never be called
10421 return nullptr;
10422 }
10423
10424 ✗ bool Item_type_holder::get_date(MYSQL_TIME *, my_time_flags_t) {
10425 ✗ assert(0);
10426 return true;
10427 }
10428
10429 ✗ bool Item_type_holder::get_time(MYSQL_TIME *) {
10430 ✗ assert(0);
10431 return true;
10432 }
10433
10434 136 type_conversion_status Item_values_column::save_in_field_inner(
10435 Field *to, bool no_conversions) {
10436 type_conversion_status res;
10437 136 res = m_value_ref->save_in_field(to, no_conversions);
10438 136 null_value = m_value_ref->null_value;
10439 136 return res;
10440 }
10441
10442 158 Item_values_column::Item_values_column(THD *thd, Item *ref) : super(thd, ref) {
10443 158 fixed = true;
10444 158 }
10445
10446 /* purecov: begin deadcode */
10447
10448 ✗ bool Item_values_column::eq(const Item *item, bool binary_cmp) const {
10449 ✗ assert(false);
10450 const Item *it = item->real_item();
10451 return m_value_ref && m_value_ref->eq(it, binary_cmp);
10452 }
10453
10454 /* purecov: end */
10455
10456 2 double Item_values_column::val_real() {
10457
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✓ Branch 1 taken 2 times.
 2 assert(fixed);
10458 2 double tmp = m_value_ref->val_real();
10459 2 null_value = m_value_ref->null_value;
10460 2 return tmp;
10461 }
10462
10463 163 longlong Item_values_column::val_int() {
10464
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✓ Branch 1 taken 163 times.
 163 assert(fixed);
10465 163 longlong tmp = m_value_ref->val_int();
10466 163 null_value = m_value_ref->null_value;
10467 163 return tmp;
10468 }
10469
10470 /* purecov: begin deadcode */
10471
10472 ✗ my_decimal *Item_values_column::val_decimal(my_decimal *decimal_value) {
10473 ✗ assert(false);
10474 assert(fixed);
10475 my_decimal *val = m_value_ref->val_decimal(decimal_value);
10476 null_value = m_value_ref->null_value;
10477 return val;
10478 }
10479
10480 ✗ bool Item_values_column::val_bool() {
10481 ✗ assert(false);
10482 assert(fixed);
10483 bool tmp = m_value_ref->val_bool();
10484 null_value = m_value_ref->null_value;
10485 return tmp;
10486 }
10487
10488 ✗ bool Item_values_column::val_json(Json_wrapper *result) {
10489 ✗ assert(false);
10490 assert(fixed);
10491 bool ok = m_value_ref->val_json(result);
10492 null_value = m_value_ref->null_value;
10493 return ok;
10494 }
10495
10496 /* purecov: end */
10497
10498 8 String *Item_values_column::val_str(String *tmp) {
10499
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 8 assert(fixed);
10500 8 tmp = m_value_ref->val_str(tmp);
10501 8 null_value = m_value_ref->null_value;
10502 8 return tmp;
10503 }
10504
10505 10 bool Item_values_column::is_null() {
10506
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 10 assert(fixed);
10507 /*
10508 Item_values_column is dualistic in nature: It represents both a set
10509 of values, and, during evaluation, an individual value in this set.
10510 This assert will ensure that we only check nullability of individual
10511 values, since a set of values is never NULL. Note that setting
10512 RAND_TABLE_BIT in the constructor prevents this function from being called
10513 during resolving.
10514 */
10515
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 10 assert(m_value_ref != nullptr);
10516 10 bool tmp = m_value_ref->is_null();
10517 10 null_value = m_value_ref->null_value;
10518 10 return tmp;
10519 }
10520
10521 4 bool Item_values_column::get_date(MYSQL_TIME *ltime,
10522 my_time_flags_t fuzzydate) {
10523
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 4 assert(fixed);
10524 4 bool result = m_value_ref->get_date(ltime, fuzzydate);
10525 4 null_value = m_value_ref->null_value;
10526 4 return result;
10527 }
10528
10529 2 bool Item_values_column::get_time(MYSQL_TIME *ltime) {
10530
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 2 assert(fixed);
10531
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 2 assert(m_value_ref != nullptr);
10532 2 return m_value_ref->get_time(ltime);
10533 }
10534
10535 340 void Item_values_column::add_used_tables(Item *value) {
10536 340 m_aggregated_used_tables |= value->used_tables();
10537 340 }
10538
10539 96978587 void Item_result_field::cleanup() {
10540
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 96978587 DBUG_TRACE;
10541 96989454 Item::cleanup();
10542 96988496 result_field = nullptr;
10543 96988496 }
10544
10545 283 void Item_result_field::raise_numeric_overflow(const char *type_name) {
10546 char buf[256];
10547 283 String str(buf, sizeof(buf), system_charset_info);
10548 283 str.length(0);
10549
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 283 print(current_thd, &str, QT_NO_DATA_EXPANSION);
10550
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 283 str.append('\0');
10551
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 283 my_error(ER_DATA_OUT_OF_RANGE, MYF(0), type_name, str.ptr());
10552 283 }
10553
10554 /**
10555 Helper method: Convert string to the given charset, then print.
10556
10557 @param from_str String to be converted.
10558 @param to_str Query string.
10559 @param to_cs Character set to which the string is to be converted.
10560 */
10561 1404843 void convert_and_print(const String *from_str, String *to_str,
10562 const CHARSET_INFO *to_cs) {
10563
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 1404843 if (my_charset_same(from_str->charset(), to_cs)) {
10564 884813 from_str->print(to_str); // already in to_cs, no need to convert
10565 } else // need to convert
10566 {
10567
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 520030 THD *thd = current_thd;
10568 LEX_STRING lex_str;
10569
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 520030 thd->convert_string(&lex_str, to_cs, from_str->ptr(), from_str->length(),
10570 from_str->charset());
10571 520030 String tmp(lex_str.str, lex_str.length, to_cs);
10572
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 520030 tmp.print(to_str);
10573 520030 }
10574 1404843 }
10575
10576 /**
10577 Tells if this is a column of a table whose qualifying query block is 'sl'.
10578 I.e. Item_field or Item_view_ref resolved in 'sl'. Used for
10579 aggregate checks.
10580
10581 @note This returns false for an alias to a SELECT list expression,
10582 even though the SELECT list expression might itself be a column of the
10583 @<table expression@>; i.e. when the function runs on "foo" in HAVING of
10584 "select t1.a as foo from t1 having foo @> 1", it returns false. First, it
10585 pedantically makes sense: "foo" in HAVING is a reference to a column of the
10586 @<query expression@>, not of the @<table expression@>. Second, this behaviour
10587 makes sense for our purpose:
10588 - This is an alias to a SELECT list expression.
10589 - If doing DISTINCT-related checks, this alias can be ignored.
10590 - If doing GROUP-BY-related checks, the aliased expression was already
10591 checked when we checked the SELECT list, so can be ignored.
10592
10593 @retval true3 yes
10594 @retval false3 no
10595 @retval unknown3 it's a non-direct-view Item_ref, we don't know if it
10596 contains a column => caller please analyze "*ref"
10597 */
10598 244919 Bool3 Item_ident::local_column(const Query_block *sl) const
10599
10600 {
10601
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 244919 assert(fixed);
10602
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 244919 if (m_alias_of_expr) return Bool3::false3();
10603 244552 const Type t = type();
10604
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 478624 if (t == FIELD_ITEM ||
10605 234072 (t == REF_ITEM &&
10606
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 234072 static_cast<const Item_ref *>(this)->ref_type() == Item_ref::VIEW_REF)) {
10607
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 11716 if (depended_from) // outer reference
10608 {
10609
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 140 if (depended_from == sl)
10610 110 return Bool3::true3(); // qualifying query is 'sl'
10611
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 11576 } else if (context == nullptr) {
10612 /*
10613 Must be an underlying column of a generated column
10614 as we've dove so deep, we know the gcol is local to 'sl', and so is
10615 this column.
10616 */
10617
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 42 assert(t == FIELD_ITEM);
10618 42 return Bool3::true3();
10619
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 11534 } else if (context->query_block == sl)
10620 11294 return Bool3::true3(); // qualifying query is 'sl'
10621
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 232836 } else if (t == REF_ITEM) {
10622 /*
10623 We also know that this is not an alias. Must be an internal Item_ref
10624 (like Item_aggregate_ref, Item_outer_ref), go down into it:
10625 */
10626 232836 return Bool3::unknown3();
10627 }
10628 270 return Bool3::false3();
10629 }
10630
10631 270 bool Item_ident::aggregate_check_distinct(uchar *arg) {
10632 270 Distinct_check *const dc = reinterpret_cast<Distinct_check *>(arg);
10633
10634
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 270 if (dc->is_stopped(this)) return false;
10635
10636 108 Query_block *const sl = dc->select;
10637
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 108 const Bool3 local = local_column(sl);
10638
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 108 if (local.is_false()) {
10639 // not a column => ignored, skip child. Other tree parts deserve checking.
10640 12 dc->stop_at(this);
10641 12 return false;
10642 }
10643
2/2
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 96 if (local.is_unknown()) return false; // dive in child item
10644
10645 /*
10646 Point (2) of Distinct_check::check_query() is true: column is
10647 from table whose qualifying query block is 'sl'.
10648 */
10649 uint counter;
10650 enum_resolution_type resolution;
10651
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 84 Item **const res = find_item_in_list(current_thd, this, &sl->fields, &counter,
10652 REPORT_EXCEPT_NOT_FOUND, &resolution);
10653
10654
2/2
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 84 if (res == not_found_item) {
10655 /*
10656 Point (3) of Distinct_check::check_query() is true: column is
10657 not in SELECT list.
10658 */
10659 60 dc->failed_ident = this;
10660 // Abort processing of the entire item tree.
10661 60 return true;
10662 }
10663 /*
10664 If success, do not dive in the child either! Indeed if this is
10665 Item_.*view_ref to an expression coming from a merged view, we mustn't
10666 check its underlying base-table columns, it may give false errors,
10667 consider:
10668 create view v as select x*2 as b from ...;
10669 select distinct b from v order by b+1;
10670 'b' of ORDER BY is in SELECT list so query is valid, we mustn't check
10671 the underlying 'x' (which is not in SELECT list).
10672 */
10673 24 dc->stop_at(this);
10674 24 return false;
10675 }
10676
10677 596373 bool Item_ident::aggregate_check_group(uchar *arg) {
10678 596373 Group_check *const gc = reinterpret_cast<Group_check *>(arg);
10679 596373 return gc->do_ident_check(this, 0, Group_check::CHECK_GROUP);
10680 }
10681
10682 270 bool Item_ident::is_strong_side_column_not_in_fd(uchar *arg) {
10683 270 std::pair<Group_check *, table_map> *p =
10684 reinterpret_cast<std::pair<Group_check *, table_map> *>(arg);
10685 // p->first is Group_check, p->second is map of strong tables.
10686 270 return p->first->do_ident_check(this, p->second,
10687 270 Group_check::CHECK_STRONG_SIDE_COLUMN);
10688 }
10689
10690 78 bool Item_ident::is_column_not_in_fd(uchar *arg) {
10691 78 Group_check *const gc = reinterpret_cast<Group_check *>(arg);
10692 78 return gc->do_ident_check(this, 0, Group_check::CHECK_COLUMN);
10693 }
10694
10695 /**
10696 The aim here is to find a real_item() which is of type Item_field.
10697 */
10698 23 bool Item_ref::repoint_const_outer_ref(uchar *arg) {
10699 23 *(pointer_cast<bool *>(arg)) = true;
10700 23 return false;
10701 }
10702
10703 /**
10704 If this object is the real_item of an Item_ref, repoint the result_field to
10705 field.
10706 */
10707 508 bool Item_field::repoint_const_outer_ref(uchar *arg) {
10708 508 bool *is_outer_ref = pointer_cast<bool *>(arg);
10709
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 508 if (*is_outer_ref) result_field = field;
10710 508 *is_outer_ref = false;
10711 508 return false;
10712 }
10713
10714 /**
10715 Generated fields don't need db/table names. Strip them off as inplace ALTER
10716 can reallocate them, making pointers invalid.
10717 */
10718 92306 bool Item_field::strip_db_table_name_processor(uchar *) {
10719 92306 db_name = nullptr;
10720 92306 table_name = nullptr;
10721 92306 return false;
10722 }
10723
10724 19109 string ItemToString(const Item *item) {
10725
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 19109 if (item == nullptr) return "(none)";
10726 18986 String str;
10727
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 18986 const ulonglong save_bits = current_thd->variables.option_bits;
10728
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 18986 current_thd->variables.option_bits &= ~OPTION_QUOTE_SHOW_CREATE;
10729 37972 item->print(
10730
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 18986 current_thd, &str,
10731 enum_query_type(QT_NO_DEFAULT_DB | QT_SUBSELECT_AS_ONLY_SELECT_NUMBER));
10732
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 18986 current_thd->variables.option_bits = save_bits;
10733
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 18986 return to_string(str);
10734 18986 }
10735
10736 256 Item_field *FindEqualField(Item_field *item_field, table_map reachable_tables,
10737 bool replace, bool *found) {
10738
2/2
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 256 if (item_field->item_equal_all_join_nests == nullptr) {
10739 88 *found = false;
10740 88 return item_field;
10741 }
10742
10743 // We have established in
10744 // 'Item_func_eq::ensure_multi_equality_fields_are_available' that this
10745 // item references a field that is outside of our reach. We also have a
10746 // multi-equality (item_equal_all_join_nests is set), so we go through all
10747 // fields in the multi-equality and find the first that is within our reach.
10748 // The table_map provided in 'reachable_tables' defines the tables within our
10749 // reach.
10750 168 for (Item_field &other_item_field :
10751
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 582 item_field->item_equal_all_join_nests->get_fields()) {
10752
2/2
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 372 if (other_item_field.field == item_field->field) {
10753 168 continue;
10754 }
10755
10756
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 204 table_map item_field_used_tables = other_item_field.used_tables();
10757
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 204 if ((item_field_used_tables & reachable_tables) == item_field_used_tables) {
10758 126 *found = true;
10759
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 126 if (replace) {
10760
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 117 Item_field *new_item_field = new Item_field(current_thd, item_field);
10761
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 117 new_item_field->reset_field(other_item_field.field);
10762 126 return new_item_field;
10763 } else {
10764 9 return item_field;
10765 }
10766 }
10767 }
10768 42 *found = false;
10769 42 return item_field;
10770 }
10771
10772 710730 bool Item_asterisk::itemize(Parse_context *pc, Item **res) {
10773
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 710730 assert(pc->select->parsing_place == CTX_SELECT_LIST);
10774
10775
1/2
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 710730 if (skip_itemize(res)) {
10776 ✗ return false;
10777 }
10778
1/2
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 710730 if (super::itemize(pc, res)) {
10779 ✗ return true;
10780 }
10781 710733 pc->select->with_wild++;
10782 710733 return false;
10783 }
10784
10785 412121 bool ItemsAreEqual(const Item *a, const Item *b, bool binary_cmp) {
10786 412121 const Item *real_a = a->real_item();
10787 412121 const Item *real_b = b->real_item();
10788
10789 // Unwrap caches, as they may not be added consistently
10790 // to both sides.
10791
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 412121 if (real_a->type() == Item::CACHE_ITEM) {
10792 ✗ real_a = down_cast<const Item_cache *>(real_a)->get_example();
10793 }
10794
1/2
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 412121 if (real_b->type() == Item::CACHE_ITEM) {
10795 ✗ real_b = down_cast<const Item_cache *>(real_b)->get_example();
10796 }
10797 412121 return real_a->eq(real_b, binary_cmp);
10798 }
10799
10800 245652 bool AllItemsAreEqual(const Item *const *a, const Item *const *b, int num_items,
10801 bool binary_cmp) {
10802
2/2
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 585559 for (int i = 0; i < num_items; ++i) {
10803
2/2
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✓ Branch 1 taken 339907 times.
 410550 if (!ItemsAreEqual(a[i], b[i], binary_cmp)) {
10804 70643 return false;
10805 }
10806 }
10807 175009 return true;
10808 }
10809